UN panel's climate report sparks concern

Scientists, environmentalists and politicians reacted with concern Friday as a UN climate panel warned temperatures could rise by as much as 4.8 degrees Celsius (8.6 degrees Fahrenheit) this century due to man's voracious ...

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.

Brazil demands clarifications on NSA surveillance

Brazil demanded answers Tuesday from the U.S. about National Security Agency spying in the country and warned that trust between the two nations would be damaged if U.S. explanations about the program were not satisfactory.

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.

Icy Arctic rising as economic, security hot spot

The icy Arctic is emerging as a global economic hot spot—and one that is becoming a security concern for the U.S. as world powers jockey to tap its vast energy resources and stake out unclaimed territories.

Cyberattacks a growing irritant in US-China ties

(AP)—Signs are growing that the sustained surge in cyberattacks emanating from China is imperiling its relations with the U.S., lending urgency to fledgling efforts by both governments to engage on the issue.

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