In less than five years, a Pacific butterfly has developed defenses against a parasitic bacterium, showing evolution can move at "warp speed," scientists say.
A gas giant orbiting a distant star shows signatures of water vapor in its atmosphere, a find that some say is the first evidence of water on a so-called exoplanet.
Using a technique that measures how much gravity bends light, astronomers say they have spotted early stars in galaxies more than 13 billion light-years away.
New medical scans bolster the theory that an unidentified corpse is Akhenaten—the heretic pharaoh married to Nefertiti who some believe was Tut's father.
The love life of an unusual African fish has been revealed—mates engage in electrical "duets" when they feel the spark of romance, a new study finds. With audio.
Previous measurements of Earth's girth were slightly off, but the difference is enough to affect forecasts of sea-level rise and other effects of global warming.
The massive tempest is currently "starving" the solar-powered rovers, so NASA has put the robots on regular nap-time schedules to try and wait out the storm.
Scientists need to rethink what constitutes life in their search for ETs and seek out so-called "weird" life-forms that could thrive in extreme environments, a new report says.
Results from a new Antarctic ice core reveal wild swings of 15 degrees Celsius (27 degrees Fahrenheit) in polar temperatures over the past 800,000 years.
