The Amazon River originated as a transcontinental river around 11 million years ago and took its present shape approximately 2.4 million years ago.

Researchers are mimicking nature's small flyers – and developing robotic bats that offer increased maneuverability and performance.

An active star-forming region of gas and dust about 15 light-years across, the nebula has recently spawned a cluster of massive, hot stars.

Scientists from The University of Manchester have identified preserved organic molecules in the skin of a dinosaur that died around 66-million years ago.

Called SunCatchers, the new dishes have a refined design that will be used in commercial-scale deployments of the units beginning in 2010.

One of the biggest moments in Earth's lifetime is the Cambrian explosion of life, roughly 540 million years ago, when complex, multi-cellular life burst out all over the planet.

The giant monoliths of Easter Island are worn, but they have endured for centuries. New research suggests that a compound first discovered in the soil of the South Pacific island might help us stand the test of time, too.

The bottom-line message from a decades-long study of monkeys on a restricted diet is simple: Consuming fewer calories leads to a longer, healthier life.

New design grows optically active semiconductors in arrays of nanoscale pillars, each a single crystal, with dimensions measured in billionths of a meter.

A hyper-realistic Einstein robot at the University of California, San Diego has learned to smile and make facial expressions through a process of self-guided learning.