Discovery

A look at what value the International Space Station has offered after 10 years.

Underground reservoirs of frozen water on Mars suggest the planet could sustain life.

DNA studies end a centuries-old hunt for the tomb of astronomer Nicolas Copernicus.

The tracks of a single-celled organism forces scientists to rethink early evolution.

Archaeologists find lavish paintings in what may be King Herod's mausoleum.

After losing tools earlier this week, astronauts are being extra-cautious.

A giant asteroid may have triggered a tsunami that struck New York more than 2,000 years ago.

An experimental pill boosts human hormone levels, helping the elderly stay strong.

The world's simplest vision system can be found in tiny marine plankton.

Scientists edge closer to reversing extinction by mapping the woolly mammoth's DNA.

A pair of spiders launched aboard the space shuttle have made themselves a home in space.

A mega-asteroid impact may have extinguished the Red Planet's magnetic field.

After an astronaut loses a bag of tools in space, NASA calculates how to proceed.

A quick picture with a camera phone could be all a criminal needs to copy your keys.

A 12,000-year-old skeleton found in a communal grave may be the remains of a shaman.

After one species of penguin was hunted to apparent extinction, another emerged.

Scientists unravel the DNA of a small kangaroo named Matilda.

Learning the name of a color changes the part of the brain that's at work.

Invasive cane toads are killing alarming numbers of freshwater crocodiles in Australia.

CO2 levels in groundwater are going up faster than atmospheric levels.