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Impossible colours

Impossible colours

Through some tricks of the human eye, we can see colours outside of the normal visual range: Stygian, self-luminous, and hyperbolic colours, and perhaps even combinations like redgreen. These are the impossible colours.

Death chemist

Lead

Thomas Midgley Jr. was responsible for two of the most environmentally damaging inventions of the 20th century. An environmental historian said he “had more impact on the atmosphere than any other single organism in Earth’s history.”

Atomic gardening

Radiation

In the 1950s, as part of the nuclear energy craze, gardeners exposed seeds or seedlings to gamma radiation in order to induce beneficial mutations. In the UK, seeds were mailed out to enthusiasts to grow. Many of the plants died, or got weird growths, as you would expect. Some, however, thrived.

Walking on water

Walking on water

Non-Newtonian fluids are usually liquid, but when force is applied they can change to be more solid or more liquid. Oobleck (a mixture of cornstarch and water) behaves like a liquid, but you can walk over it as if you were walking on water.