These microorganisms thrive in heat with colorless and yellow microbes growing in the hottest water. And orange, brown, and green microbes growing in cooler thermal waters.

The springs can be viewed safely from designated trails and boardwalks at Yellowstone National Park.

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Roman soldiers were paid with salt—given as a monthly allowance called a “salarium.” Salarium evolved into the word “salary.”

Wallabies are known to get high on opium and create crop circles in poppy fields

Bioluminescent ghost mushrooms glowing in the dark, nestled on a forest tree trunk.

Ghost Mushrooms are Bioluminescent—Their Glow is Created by the Same Biochemical Responsible For the Light From Fireflies

Tomatoes were cultivated by the Aztecs in the Americas—they were brought to Italy by the Spanish in the 1500s—but people thought they were either poisonous or an aphrodisiac

Tomatoes were cultivated by the Aztecs in the Americas—they were brought to Italy by the Spanish in the 1500s

The unique stripes of the zebra are believed to help them regulate their body temperature in warmer climates and act as camouflage

Bioluminescent glowworms illuminating the ceiling of a cave in New Zealand.

There is a cave in New Zealand filled with glow worms that produce blue-green bioluminescence