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A technology called adaptive optics is enabling astronomers to peer into space as never before. The specialized telescopes, which have mirrors that can adjust their shapes up to 1,000 times per second, compensate for the blurring that happens when light passes through Earth's atmosphere.

But so, too, can cheeriness. Research on college roommates indicates that a person's psychological outlook can rub off on those close to them.

Alzheimer's disease and depression have a lot in common, and people with depression face a greater risk of dementia as they age. Researchers aren't sure why and are seeking clues. They are trying to find out if treating depression will then help prevent or delay dementia.

Major indexes in China closed down more than 5 percent Monday — making it the worst day for losses since 2009. The plunge reverberated, weighing down markets across Asia.

NSA surveillance leaker Edward Snowden left Hong Kong over the weekend and is seeking asylum in Ecuador. He spent the night in Moscow where Ecuadorean authorities met him at the airport. For more on Russia's role in this journey, and the role of WikiLeaks, David Greene talks to Kathy Lally, Moscow bureau chief of The Washington Post.

It was widely reported that he would fly from Moscow to Havana on Monday. But he apparently did not board that flight. Just where Snowden is headed isn't known for sure, but it's thought that his final destination will be Ecuador.

David Hockney's fake diploma is expected to sell for up to $27,000. He created it in 1962 when he was denied a real degree by the Royal College of Art because he refused to write a final essay.

Online search engines that protect users' privacy are seeing a spike in traffic after the NSA surveillance revelations. DuckDuckGo, does not track users at all, says it's seen record-breaking traffic.

Also: Opening statements due in trial of George Zimmerman for death of Trayvon Martin; NSA leader Edward Snowden thought to still be in Russia; another large wildfire continues to spread in Colorado.

Even if Virginia Democrats win the Lieutenant Governor’s race this year that won’t be enough to give them control of the state Senate unless they also win…