When did pre-modern humans begin using fire?

When did pre-modern humans begin using fire?

Circumstantial evidence suggests that archaic humans’ ability to cook food and consume more calories may have played a pivotal role ...
Climate change fuels rising arsenic levels in rice. GM crop varieties, new growing techniques could cut toxic exposure

Climate change fuels rising arsenic levels in rice. GM crop varieties, new growing techniques could cut toxic exposure

Rice is particularly vulnerable to arsenic uptake because unlike most crops, it grows in flooded conditions with anoxic soil. Microbes ...
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350 million years ago, a thinning atmosphere sparked a mass extinction. We’re headed in the same direction

Scientists noticed that around the time of the Hangenberg Crisis, [fern] spores began to look strange. Some were much darker ...
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