Welcome to The Public Lab Gulf Coast Page We are: engaged citizens, researchers, educators, comm...
Public Lab is an open community which collaboratively develops accessible, open source, Do-It-Yourself technologies for investigating local environmental health and justice issues.
| 121 | warren |
November 07, 2011 15:42
| over 12 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed in: the Public Laboratory ArchiveMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (Nov 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 120 | warren |
May 17, 2011 17:24
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (May 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 119 | warren |
May 17, 2011 17:17
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (May 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 118 | warren |
May 17, 2011 17:16
| almost 13 years ago
[toc] Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataorhttp://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (May 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 117 | warren |
May 17, 2011 17:15
| almost 13 years ago
[toc] Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (May 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 116 | Shannon |
May 15, 2011 21:42
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done in cooperation with groups such as the Louisiana Bucket Brigade and the University of South Alabama on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (May 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' on the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 115 | Shannon |
April 21, 2011 20:53
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done largely in cooperation with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (April 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 114 | Shannon |
April 21, 2011 20:49
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites in Louisiana, Mississippi, Alabama and Florida. Our work on the Gulf Coast has been done largely in cooperation with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Current focuses (April 2011) include:
Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 113 | Shannon |
April 21, 2011 19:35
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites. Our work on the Gulf Coast has been done largely in cooperation with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 112 | Shannon |
April 21, 2011 19:35
| almost 13 years ago
Since May 2010, we have been using balloon mapping to capture aerial imagery of spill-affected sites. Our work on the Gulf Coast has been done largely in cooperation with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataor http://publiclaboratory.org/wiki/mapsMore images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’ve helped to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and regulatory changes in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in participating in a trip or conducting your own mapping session, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 111 | gonzoearth |
April 21, 2011 18:37
| almost 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: And more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 110 | warren |
April 08, 2011 18:56
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataAnd more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 109 | warren |
March 16, 2011 19:42
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataAnd more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 108 | warren |
March 16, 2011 19:42
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataAnd more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 107 | warren |
March 09, 2011 23:18
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/dataAnd more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) To support our efforts, consider donating. Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 106 | Shannon |
February 25, 2011 00:14
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/data And more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) To support our efforts, consider donating. Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 105 | warren |
February 15, 2011 17:22
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/data And more images and information can be found at:
We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) To support our efforts, consider donating. Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
LA Bucket Brigadewebsite - 4226 Canal Street, New Orleans, LA 70119 (504) 484-3433. How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 104 | warren |
February 15, 2011 17:04
| about 13 years ago
Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/data as well as: https://www.flickr.com/photos/tags/gulfoilmap/ We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) To support our efforts, consider donating. Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
LA Bucket Brigadewebsite - 4226 Canal Street, New Orleans, LA 70119 (504) 484-3433. How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 103 | warren |
February 15, 2011 17:03
| about 13 years ago
What is going on?Since May 2010, we have been cooperating with the Louisiana Bucket Brigade on a community-led monitoring of the Deepwater Horizon oil spill. We are using balloon mapping to capture aerial imagery of spill-affected sites. The data we have gathered can be viewed at: http://grassrootsmapping.org/data as well as: https://www.flickr.com/photos/tags/gulfoilmap/ We’re not trying to duplicate the satellite or flyover imagery (though we’re helping to coordinate some of the flyovers and trying to ensure that the data is publicly accessible). We are helping Gulf Coast residents to use balloons, kites, and other simple and inexpensive tools to produce their own documentation of the spill… and hoping that such data collection will support environmental research, policy, and legal uses in coming years. Grassroots Mapping: Kickstarter Pitch from TungstenMonkey on Vimeo. We're organizing mapping 'trips' to the coast. If you're interested in leading a trip, please contact us at the mailing list, and we'll help you get started. (equipment, training, finding volunteers, etc.) Team
...feel free to add your name! Contact information
How can you help?
Equipment:
Mapping Resources
Other mapping efforts
LA Bucket Brigadewebsite - 4226 Canal Street, New Orleans, LA 70119 (504) 484-3433. How-to Mapping GuidesLook at our 4-page PDF guide to get started. |
Revert | |
| 102 | warren |
January 22, 2011 00:38
| about 13 years ago
In New Orleans, a variety of concerned residents and activists have been using balloons and cameras to capture high-resolution imagery of the Deepwater Horizon oil spill since May 2010. The data we have gathered can be viewed at http://grassrootsmapping.org/data |
Revert |