Lisa M. Krieger

PALO ALTO, Calif. — Two-year-old conjoined twins can finally lead separate lives, after a successful seven-hour surgery by a huge medical team at Stanford’s Lucile Packard Hospital.

In a tearful meeting with the media at the hospital’s entrance late Tuesday afternoon, Angelina and Angelica’s exhausted mother, Ginady Sabuco, said, “I thank God for everything. This is a dream come true.”

SAN JOSE, Calif. -- A new study confirms it: Google is altering your brain. More precisely, our growing dependence on the Internet has changed how -- and what -- our brains choose to remember.

When we know where to find information, we're less likely to remember it -- an amnesia dubbed "The Google Effect" by a team led by psychologist Betsy Sparrow of Columbia University.

SAN JOSE, Calif. -- Missing for months, colorful flocks of flycatchers, warblers, orioles and black-headed grosbeaks are once again abundant in the Bay Area. And they've navigated with such precision -- despite lengthy journeys with no maps -- that they return to the same park, the same yard or even the same tree.

Did they hear their way home?

That's the idea behind a new theory by U.S. Geological Survey geophysicist Jon Hagstrum, whose research suggests that birds navigate by using Earth's low-frequency sound waves to identify the "address" of home.