Explainer: How will UN climate deal on loss and damage work?

The decision by nations around the world to establish a fund to help poor countries hit hard by a warming planet was one of the most significant since U.N. climate talks began 30 years ago. Here's what you should know about the deal.

Arizona's megadrought: The latest and what can we do to help

The federal government is expected to restrict Arizona's water supply even more in the coming months, heading into the new year. We're taking a look at problems that may be coming down the pike and what various Arizona water districts are doing about it, and what you can do too.