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October 24, 2016


The side of The Washington School For The Deaf. The top of the building is red brick. The photo's main feature are illustrations of people using American Sign Language.

From Pantomime to Stable Sign

It only takes five generations of learners for a pantomime to become a stable sign.

October 21, 2016


a tuxedo kitten and a tabby kitten with an all-white belly and paws gaze out an open window. The tabby kitten is in a position where it looks like it is looking at the world below.

Humpty Dumpty Wasn’t A Cat

You may have seen a cat fall from a tree or high rooftop. Ever wonder how felines can survive such great falls?

October 20, 2016


A blue background. A woman in the center of the photograph. Most of her is obscured because of a yellow-orange glow caused by a light leakage.


If you look at a bright lamp and then close your eyes, why can you still see the light?

October 19, 2016


On the left side of the screen, a large spider plant. The camera angle is as if someone is looking directly down at the long, green leaves. Next to it is a jar with a much smaller version of the plant growing.

Plants in Motion

Is your houseplant moving or is that just an optical illusion?

October 18, 2016


A bird-of-paradise. Mostly black, but near its neck it is iridescent: red, yellow, green, blue.

Why Birds of a Feather Are What They Eat

Why do some species of birds-of-paradise have such eye-catching plumage?

October 17, 2016


A large polyphemus moth (orange in color) sits on bright green leaves.

Bright Lights, Brighter Moths

Moths are much less attracted to artificial light than they used to be.

October 14, 2016


Three neon lights in the shapes of hand. The left is orange-red. The middle is bright green. The right is red.

The Future in the Palm of Your Hand

What does the crystal ball reveal for human evolutionary future? Is it six-fingered hands for everyone?

October 13, 2016


The polar lights over a small town in New Zealand

The Polar Lights We Can’t See

Every planet with a magnetic field can produce polar lights. So why can't we see Jupiter's?

October 12, 2016


Large storm clouds hover over a small house

Boiling Water Under Boiling Clouds

Why does water boil faster on stormy days rather than sunny days?

October 11, 2016


A pair of red-and-blue 3D glasses.  The photographer has manipulated the image to look as if the 3D glasses are being seen through another pair of 3D glasses.

3D Glasses For Praying Mantises

How did scientists confirm stereoscopic vision in praying mantises? By making them watch 3D movies.

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