Posts by 

Mike Brennan

Why do we see illusions?

In this video, neuroscientist Mark Changizi explains why optical illusions occur

NASA on asteroid defense: If it’s coming in three weeks, pray

The U.S. House Science, Space, and Technology Committee met in a hearing on March 19, 2013 to discuss threats from space.

Robot hand ties shoelaces and deals cards

In this video, Nigel Ackland demonstrates how his new robotic hand allows him to do ordinary things with extraordinary technology.

The most astounding fact about the universe, according to Neil DeGrasse Tyson

In this three-minute video, Neil DeGrasse Tyson answers the question "What's the most astounding fact you can share with us about the universe?"

The wisdom of astronauts

This amazing video features footage of Earth from space and astronauts speaking on how their experience changed their lives.

Video: What is the universe? (in 2 minutes)

The universe explained in two minutes.

Video: Geminid Meteors on the Blue Ridge Parkway

Watch this time-lapse video capturing several days of Geminid meteor shower activity

Video: Largest glacier calving ever caught on film

Watch this astounding video of an historic breakup of the Ilulissat Glacier in Greenland in 2008.

Video: Marriage proposal by aurora light

Man proposes to his sweetheart as the aurora borealis - or northern lights - glow around them.

Video: A bird ballet

Watch this beautiful video of thousands of birds swooping and diving in unison - dancing in the sky.