How the Columbian Exchange reshaped global food

The Columbian Exchange reshaped diets around the world

After contact between the Americas and the Old World, crops such as corn, potatoes, sweet potatoes, and cassava traveled east. Wheat and rice, along with horses, cattle, sheep, and goats, moved west. Food and farming changed on both sides of the Atlantic.

Evolution invented bioluminescence at least 94 separate times

At Least 94 Independent Origins

The ability to make light did not evolve only once. It appeared independently at least 94 times in different groups of life. The oldest known example comes from the ancestors of some corals about 540 million years ago.

A giant black hole can have the average density of water

≈ density of water

A black hole can contain an enormous mass while having a surprisingly low average density inside its event-horizon-sized region. For a black hole with 100 million times the Sun's mass, that average density is roughly similar to water.

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How the Columbian Exchange reshaped global food

The Columbian Exchange reshaped diets around the world

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