US, China exchange concerns on hacking

The United States and China aired concerns on hacking, which has emerged as a major irritant between the world's two largest economies in the build up to annual talks this week.

US takes its diplomacy digital

When John Kerry took to Twitter on his first day as US secretary of state, he joined an army of diplomats using social media to reach out and connect directly with people around the world.

Climate talks convene with US and world falling short of goals

For the first time since 1995, when the U.N. started holding its annual climate summits, the United States brought something big to the talks that began Sunday: a series of new laws that could take a big whack at its greenhouse ...

Climate science alarming, irrefutable: Kerry

US Secretary of State John Kerry said Monday the evidence for climate change was beyond dispute but it was not too late for international action to prevent its worst impacts.

Kerry gets his Twitter account back (Update)

A year into the job US Secretary of State John Kerry Tuesday enthusiastically relaunched his Twitter account, and appeared ready to flood the social networking site with messages.

US backs push for open access textbooks in Arabic

The United States has backed a project that aims to translate American textbooks into Arabic and make them available without copyrights restrictions to educators and students in the Middle East.

US-China climate deal aims to prod others to act

A groundbreaking agreement struck by the United States and China is putting the world's two worst polluters on a faster track to curbing the heat-trapping gases blamed for global warming. With the clock ticking on a worldwide ...

The number that could shift climate action into overdrive

The United States is updating a figure that experts say could help transform American climate action and reverberate around the world—the price it puts on future damages to society caused by carbon pollution today.

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