Fighting climate change can feel overwhelming, but what if action looked like something as small as planting a tree — or a forest? A forest can be grown anywhere, even in your own backyard. Shubhendu Sharma, an eco-engineer and TED Fellow, explains how.

An internet-connected network of cameras and sensors in five states taps into the power of crowdsourcing and allows wildfires to be spotted quickly and more precisely. Graham Kent, the seismologist who helped create the system, explains how it works. A year ago, a grim new record was set. In November 2018,