In a commencement address at the Coast Guard Academy, the president told cadets they'll be responding to climate change throughout their careers.
Watch one of the first climate models in action.
This Woman Crush Wednesday, we have a little reminder for all the ladies out there: You don't have to kill yourself to kill it.
The Obama administration just released a 10-year plan to grow monarch butterfly and bee populations.
Plus, meet the McDonald's mascot you wish would come back and dethrone Ronald.
We've been living a lie.
New gene-editing technologies may take down antibiotic-resistant bacteria once and for all.
Developing countries are poised to lead the world on clean energy investment.
Bertha, the tunneling machine drilling beneath downtown, is falling apart.