The Lima Accord set the framework for an unprecedented global pact to slow climate change.
The State Secretary dropped by the Lima climate talks to implore delegates to reach accord.
It's tough going at the climate talks, where a draft agreement is getting longer instead of shorter.
State mandates and tax incentives make California the most popular state for buying an electric car.
High-level climate talks began on Tuesday, dominated by doubts about rich countries' financial pledges.
American political dysfunction could keep legally binding rules out of the next climate pact.
Negotiators are about to gather in Lima to thrash out the details of the first post-Kyoto climate treaty.
The global effort to address carbon emissions is a start but it's not enough to avoid dangerous warming.
Scientists now have a benchmark for ocean acidification to measure future changes against.
A federal task force was formed last year to provide adaptation ideas. On Monday, it delivered 100.
Following news of his climate pact with China, Obama will announce billions of dollars in climate aid.
Details on the landmark deal that provides a ray of hope for limiting global carbon emissions.
Learn about monster tornadoes, a Sandy buyout program and more in this week's slideshow of top climate news.
A breakdown of the nationwide results of the climate, energy and environment-related measures.
A $300 million program is helping New Jersey retreat from inland river regions, but not the coast.
IPCC analysis of climate change has painted an ugly picture, but it also offers hope and guidance.
Sandy will "be one of the most studied storms" to hit the U.S. Here's what researchers are already learning.
Arctic sea ice decline has doubled the chances of an extreme cold winter over Europe and Asia.
The European Union plans to reduce its greenhouse gas pollution to 40 percent below 1990 levels by 2030.
A new checklist will help San Francisco protect $25 billion worth of infrastructure from rising seas.