Scientists discuss rover's upcoming mountain climb on Mars

In August, NASA's Mars Science Laboratory will reach the Red Planet and begin its search for habitats that could have supported life. The...

Quake study offers new clues on a California fault's mystery

Thanks to a new method of modeling earthquakes, scientists may now understand why the Parkfield segment of the San Andreas fault — a...

Solar project in desert gets boost from California Legislature

Despite strong opposition from environmentalists, the state Assembly on Thursday approved controversial legislation that allows a solar...

NASA mission brings protoplanet Vesta into focus

NASA'sfirst hard look at the protoplanet Vesta has given scientists an unprecedented view of its makeup, terrain and history — and...

Oldest known Maya calendar found in Guatemala

In the remote northeastern corner of Guatemala, archaeologists have found what appears to be the 9th century workplace of a city scribe,...

FDA warns against multiple sclerosis treatment

WASHINGTON — An experimental treatment for multiple sclerosis has caused death, strokes, nerve damage and abdominal bleeding and has...

Failing satellites jeopardize weather forecasting, report says

WASHINGTON — The number of U.S. satellites watching Earth is expected to plummet by 2020, and weather forecasting, including hurricane...

Pill to prevent HIV gets an FDA endorsement

SILVER SPRING, Md. — The first drug shown to prevent HIV infection won the endorsement of an FDA advisory panel Thursday, clearing the...

State coastal panel OKs scaled-down plan for Pebble Beach project

A truce has been forged in the decades-long fight over the forested land surrounding the world-famous Pebble Beach resort.

International Space Station: Critics ask, where's the science?

WASHINGTON — After more than 12 years and at least $100 billion in construction costs, NASA leaders say the International Space...

Lawmakers' plan would save some targeted California parks

SACRAMENTO — Lawmakers are considering a new proposal to save dozens of state parks from the budget ax, rather than follow through...

Drug moves toward FDA approval for HIV prevention

WASHINGTON — A pill that has long been used to treat HIV has moved a step closer to becoming the first drug approved in the U.S. to...

42% of American adults will be obese by 2030, study says

The ranks of obese Americans are expected to swell even further in the coming years, rising from 36% of the adult population today to 42% by...

Dinosaurs' digestive gases linked to global warming

Dinosaurs' gassy guts may have contributed to global warming tens of millions of years ago, according to a new study that finds a group of...