These bizarre snow and ice formations, called "penitentes", form in high-altitude regions such as the Chajnantor plateau, close to where the...

These bizarre snow and ice formations, called "penitentes", form in high-altitude regions such as the Chajnantor plateau, close to where the...

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Fox Fire: Sometimes known as “fairy fire,” foxfire is the bioluminescence created by some species of fungi in decaying wood.

Fox Fire: Sometimes known as “fairy fire,” foxfire is the bioluminescence created by some species of fungi in decaying wood.

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Butterfly scales. Coloured Scanning Electron Micrograph (SEM) of scales from the wing of a peacock butterfly, Inachis io.

Butterfly scales. Coloured Scanning Electron Micrograph (SEM) of scales from the wing of a peacock butterfly, Inachis io.

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