Has dark matter finally been detected? | Science | The Guardian.

Why Are Europeans White? (E1) – a knol by Frank W Sweet.

One typical half-pound bowel movement contains 300 kilocalories of energy when incinerated in a bomb calorimeter. Extrapolating to New York’s eight million people, it is theoretically possible to derive as much as 100 million kilowatt-hours of electricity a year from bodily wastes alone, enough to run four, 30-story farms.
Growing Skyscrapers: The Rise of Vertical Farms: [...]

YouTube – Amazing! Bird sounds from the lyre bird – David Attenborough – BBC wildlife.
Wow. Be sure to listen all the way through.

Martian landscapes – The Big Picture – Boston.com.
Seeing these pictures of Mars shows just how limited our imagination is when we try to create other planets, either in words or pictures.

Cell Size and Scale.
Drag the slider to zoom in, all the way down to a carbon atom.

Ira Hyman, a professor of psychology at Western Washington University in Bellingham, put a clown on a unicycle and asked him to ride around campus. He then analyzed the reactions of students to find out who noticed the clown and who didn’t.
via Clown study no laughing matter « Headline Health.

A new study shows that dogs and young human babies both make the same classic error in a famous psychology experiment — while wolves raised by people do not.
via Babies And Dogs Make The Same Classic Mistake : NPR.

That B&W structure is an actual image of a molecule and its atomic bonds. The first of its kind, in fact, and a breakthrough for the crazy IBM scientists in Zurich who spent 20 straight hours staring at the “specimen”—which in this case was a 1.4 nanometer-long pentacene molecule comprised of 22 carbon atoms and [...]

YouTube – Feynman ‘Fun to Imagine’ 6: The Mirror.

Richard Feynman explains why a mirror appears to reverse left and right but not top and bottom.