Great Depression worldwide GDP decline Great Recession comparison

The Great Depression cut global GDP

Estimated 15%

From 1929 to 1932, worldwide GDP fell by an estimated 15%. During the 2008–2009 Great Recession, the decline was less than 1%.

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Drug-resistance genes can spread between different bacteria

Bacteria can pass genes for drug resistance to other bacteria, even to different species. This lets resistance spread much faster than it would through reproduction alone.

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Wildebeest migrate thousands of kilometres for food and water

~2 million each year

Huge herds of wildebeest migrate between Tanzania’s Serengeti and Kenya’s Masai Mara in search of food and water, traveling roughly 2,900 kilometres along their annual route.

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