The sun emits radiant energy called electromagnetic radiation. The blue sky we see is a form of this energy.
A Tardigrade is an aquatic micro-animal measuring around 1mm long. In 2007 some of them survived in space on the outside of a rocket.
The chlorophyll in plants reflects the green wavelengths of sunlight back to us. This process gives plants their green appearance.
Mathematician and cryptographer Alan Turing came up with a chemical theory of morphogenesis to explain why leopards have spots.
Despite having five eyes, bees can’t see red. They can, however, see ultraviolet, which is invisible to us.
The Grand Prismatic Spring of Yellowstone National Park in the USA is a rainbow coloured hot spring. Cyanobacteria create these colours.
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