Click on the graphic to watch the Flash movie. Grist thanks its sponsors. Become one. To support our nonprofit environmental journalism, please consider disabling your ad-blocker to allow ads on Grist. Here's How Next Article It’s What’s on the Outside That Counts Grist staff Culture Grist thanks its sponsors. Become one. Grist thanks its sponsors. Become one. To support our nonprofit environmental journalism, please consider disabling your ad-blocker to allow ads on Grist. Here's How
When is it safe to burn fields? In Thailand, farmers can turn to a new app to check. Zach Bernsten & Carmela Guaglianone
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