Circular pits on the surface of Mars appear to be openings to underground caverns, researchers say, and may be the most promising places to look for signs of life.
New York to London in one hour? Hypersonic passenger service may not be far off, thanks to a new agreement between NASA and billionaire Richard Branson.
While conventional theory says they needed stocky physiques to stay steady in trees, australopiths might have needed short legs more to battle for females.
Ship emissions, forest fire smoke, and other pollutants are wafting into the polar region and heating the atmosphere faster than anywhere else on Earth, researchers report.
If all of the surprisingly pure ice at Mars's south pole melted, it would cover the entire planet with approximately 36 feet (11 meters) of water, scientists say.
Advances in light-emitting diodes could bring the tiny, energy-efficient lights even closer to replacing today's incandescent bulbs, according to an industry expert.
Scientists have spotted fragments of a massive space collision they say may help them piece together how the moon formed. The crash may also create the brightest comet ever.
The earliest known human with a long childhood has been found, a new study says, and it may push back the advent of modern humans by 100,000-plus years.
Evidence is mounting that an act often called a sexual blunder is actually an evolutionary process that is more common in animals than previously believed, an expert says.
A new method for sending quantum messages farther than ever before may lead to tiny, ultrafast computers and a satellite system for delivering super-secure messages, experts say.
