Astronauts enter a new module they have attached to the International Space Station. They conduct a second space walk and plan for a third.

Sumatran orangutans, Miss Waldron's red colobuses, and Peruvian yellow-tailed woolly monkeys are among the world's most endangered primates, according to a new report.

Astronauts begin spacewalk to install international space station's new live-in module

A medieval church on wheels, a Great Wall fashion show, and a Chinese moon mission are among the week's eye openers.

Discovery shuttle astronauts begin the difficult job of attaching an Italian-made module to the International Space Station. The project is expected to take ten days.

How much Earth's climate will change due to global warming is inherently unpredictable, a new study argues.

An Indian state is implanting microchips under the skin of all its captive elephants as part of a project to register and keep track of the animals.

After a two-year delay in delivery, the superjumbo Airbus A380 jet made its first commercial flight Thursday from Singapore to Sydney, Australia.

Temperatures may rise to a point where animal and plant life start dying in massive numbers, scientists say. The theory is hotly debated.

A cataclysmic event 50 million years ago changed the face of the planet from the Hawaiian Islands to Antarctica, according to new research.

A new exhibition celebrates Japan's long history in the field of robotics, bringing together some of the best known prototypes.

Newly found clusters of large ice chunks support the theory that Saturn's rings formed as icy moons were slowly pulverized.

A theoretical tunnel of light-bending materials could allow for more precise surgeries, a new study says. Meanwhile, scientists are closing in on techniques for mass-producing such substances.

The boy pharaoh likely died after falling from his chariot while hunting, according to Egypt's top archaeologist.

A quarter million people have been ordered to flee California wildfires. Fierce Santa Ana winds whipping the flames make the blazes difficult to control.