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Chatter: What we're hearing

Need to know: Clashes in the region of Xinjiang spurred China's President Hu Jintao to leave Italy — where he was due to attend the G8 summit today — and return to China. Military police are attempting to quell the violence, which has killed more than 150 people and wounded more than 1,000. More than 1,400 people have been arrested since Sunday.

Meanwhile, a Communist Party leader has reportedly said he would seek the death penalty for those behind the conflict.

And it looks like incumbent president Susilo Bambang Yudhoyono can rest easy. Polls closed in Indonesia today, and a quick count showed the incumbent receiving about 60 percent of the vote. Official results are a few weeks away, but quick counts have been accurate in the past.

Want to know: Google takes on Microsoft. Late Tuesday night, Google announced that it's working on a new computer operating system.

In other tech related news, South Korea's spy agency is blaming a hostile group or government for cyberattacks on U.S. and South Korean government agency websites.

Dull but important: The latest from the G8 summit in Italy, which begins today — no agreement yet on a climate change plan. And picking apart Obama's visit to Russia.

Just because: Have Newcastle scientists created human sperm in a lab?

And a look back at Obama's first 167 days ... through some pretty great photos.

Wacky: Knut the polar bear is now officially a Berliner, after the Berlin Zoo agreed to pay $600,000 to the Neumuenster zoo.