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A fossil find in a South African cave has scientists both excited and puzzled: It could be the missing link between our ape-like ancestors and modern humans. The mix of primitive and modern traits is also forcing scientists to re-examine the process of human evolution.

Tiny vampire-like hitchhikers are snagging unwelcome rides with holiday travelers. Bedbugs are popping up in places like Lindbergh Field and other airports.

Court papers don't say how a former San Diego man was allegedly recruited by a Somalian terrorist organization. One expert says slick new Internet videos combined with radical Islam's push for a global movement is rapidly making recruitment easier.

In his heyday, the New York congressman had been one of his party's best deliverers of the Democratic Message, whatever it was at any given moment. The irony is that he became a distraction from the Message once revelations surfaced about his online exchanges with several woman. That, in the end, proved unforgivable.

Scientists from a Nobel-winning panel on climate change have concluded that the planet is warming at an ever faster pace. The group released its stark findings at a conference in Spain.

In her first book, author Mara Hvistendahl explores why parents in several Asian countries are choosing to have boys rather than girls as birth rates are dropping. The trend of sex-selective abortion is yielding broad impacts on the economy, culture and stability of those nations.

The attempted bombing of an airplane on Christmas Day could lead to more widespread use of whole-body imaging scanners. Some airports have started using the devices, but critics are worried that the machines invade passengers' privacy.

Two UC San Diego researchers were awarded grants totaling $2.5 million today from the California Institute for Regenerative Medicine.

Birds, butterflies, beaver and antelope, wildflowers and frogs -could their survival possibly be connected to top predators like the wolf and cougar? Narrated by Peter Coyote, this documentary goes behind the scenes with leading scientists to explore the role top predators play in restoring and maintaining ecosystems and biodiversity. Wolves and cougars, once driven to the edge of existence, are finding their way back -- from the Yellowstone plateau to the canyons of Zion, from the farm country of northern Minnesota to the rugged open range of the West.

Not many new tech jobs are likely to emerge in 2010, but analysts expect to see a rebound in employment by the middle of the decade. Over the next five years, the economy may see the addition of 1 million new technology jobs — an increase of about 10 percent.