THE MUST reads
Trump's mixed signals on climate change send a worrisome message to NASA and federal climate agencies.
The move could drastically reduce the country's carbon footprint and prevent devastating wildfires.
A new assessment paints a grim picture for the giant creatures by 2050.
Electricity-intensive cannabis production has a big carbon footprint, but with legalization, some eco-conscious growers want to make pot a shining model of sustainability.
The most extensive analysis of Earth's rotation confirms speculation that our planet is slowing down, and this rotation change can no longer be explained by tidal friction. So what's causing it?