Environmental issues have become more polarized even since the years of George W. Bush. One factor: The stakes for both parties surrounding climate change have risen.
In this edition: Morocco's lessons on climate-smart agriculture; managing dams gets tougher as more precipitation falls as rain not snow; the great bird count.
Amid concerns about climate change and habitat destruction, thousands of citizen-scientists look to the skies to track the progress of birds as the Great Backyard Bird Count begins.
A new study makes the case that a mostly submerged landmass about two-thirds the size of Australia meets all the usual criteria for a continent.
What's next for the EPA? Some fear nominee Scott Pruitt's intentions, but others say the green revolution's momentum will limit damage.
Warm air and warm water bring more bad news for marine life.