Rep. Lamar Smith of Texas is formally investigating a recent study on global warming. Smith calls the timing of the study's publication "suspicious," but many scientists call his tactics "bullying."
Using farmland to capture carbon rather than release it into the atmosphere is called carbon farming. The idea is taking off and countries and institutions have endorsed a new agenda promoting it.
Past U.S. leaders tried to commit the nation via treaty to steep cutbacks in greenhouse gases. But without congressional support, those pledges fizzled. President Obama is trying regulation, instead.
Companies, once seen as an obstacle to or even an enemy of curbing emissions, now realize that tackling climate change can be good for their bottom line.
The U.S. and China are the world's two largest polluters, but the will to do something about climate change is lower in both than in the rest of the world. In the U.S., there's a party split.
While many GOP presidential hopefuls have denounced the attacks on Planned Parenthood, some push back on liberal critics who say heated anti-abortion rhetoric played a role in the rampage.