Roboticists are fundamentally rethinking their craft. Particle robots don't look like biological creatures, but they're constructed like biological systems, vast in complexity and abilities, yet composed of simple parts. Are they a step toward the proverbial 'gray goo'?

Are we alone? If advanced alien civilizations are out there, why haven't we heard from them? Scientists call this Fermi's Paradox - aka The Great Silence - and they gathered in Paris to discuss it.

A new theory says that the ever-slowing speed at which our brain processes images as we get older speeds up our perception of time.

Aspen trees - fondly called Quakies by some - have trembling, quivering leaves. Now those leaves have inspired an energy-harvesting mechanism that might rescue dust-laden rovers on Mars.

New evidence suggests that humans have a magnetic sense that lets our brains detect and respond to Earth's magnetic field.

How can the cost of space travel – to and from the moon and possibly to Mars - be reduced? One approach is to mine the moon for necessary resources.

Watch an endangered right whale mom and her baby interact with a group of curious dolphins. The video was shot via drone by NOAA researchers.

A researcher argues that we'd be better off if we moved to daylight saving time (DST) year-round.

"A squeal of distress will go flying across America ... It’s all those clocks, being twisted an hour forward, away from the natural time they were born to show." Insights on time from astronomer Guy Ottewell, here.

Check out this interesting eclipse of the sun by Earth's moon on March 6. A NASA spacecraft saw it. During the eclipse, the moon appears to reverse its direction!