Martha Morales

What is the moon illusion?

It’s nearly full moon. So you might see an extra-large-looking moon low in the sky, one evening soon. Why does the moon look so big? It’s because of the “moon illusion,” a trick your brain is playing.

Video: Seeing (infra)red

Andrew Shurtleff’s stunning time-lapse video shows the world as viewed in near-infrared – like a planet painted in pure ice.

Video: Magnetic putty

Joey Shanks (ShanksFX from PBS Digital Studios) created this video powered by awesome power of magnetic putty.

Video: Honeybee in ultra slow motion

Watch a honeybee as it starts its flight, filmed with a high speed camera at 3000 frames per second.

Video: Wringing out a washcloth on the ISS

Here’s another way cool video of astronaut Chris Hadfield doing an everyday thing in zero gravity aboard the ISS. This time he’s wringing out a wet washcloth.

The history of humans on Earth, in two minutes

If you’ve got two minutes (OK, two and a half minutes) you can watch this cool video of the history of humans on Earth.

Watch this video of a plunge into an Antarctic lake

An intrepid diver shot the video from the bottom of icy lake, at the bottom of the world.

Ink into water in super high-resolution slow-mo

This super high resolution video features slow motion diffusion of ink drops in water. What does it suggest to you … people dancing … flowers blooming…?

Video: Why isn’t Pluto a planet anymore?

Video by C.G.P. Grey does a good job explaining why, in 2006, the International Astronomical Union demoted Pluto to dwarf planet status.

Video: How human numbers stack up against everything from bugs to bacteria

Humans on Earth now number 7,063,264,715 … 7,063,264,716 … 7,063,264,717 … Ever wonder how human population numbers stack up against other species?