Thawing permafrost, drowned trees, methane releases and increased wildfires, are slowly transforming Northern Forests from carbon sinks to carbon emitters.
The U.N. suggests that adding 2.5 billion acres of forest to the world could limit global warming to 1.5 degrees Celsius by 2050. But some researchers aren't so sure.
There's bipartisan agreement on the sad state of US infrastructure — an opportunity not just to build roads, but to create jobs and end climate change.