A look at the global deal and how volunteers will be kept accountable

Making an energy pledge is one thing, following through is a whole different story

In Paris, representatives of some 200 countries will work towards a climate change deal.

Global warming caused by burning fossil fuels was first predicted more than a century ago.

It's tempting to set low targets and let other countries pick up the slack.

The two take on big issues, including the Trans-Pacific Partnership.

The Sustainable Development summit's aim is to end poverty.

The U.S. launched at least 47 of them at militant strongholds in Syria on Monday.

The Senate Finance Committee thinks about bringing back expired tax breaks. And a look at the safety and costs of in vitro births.