Related topics: risk factors · sleep

Keeping time: Circadian clocks

Our planet was revolving on its axis, turning night into day every 24 hours, for 4.5 billion years - long before any form of life existed here. About a billion years later, the very first simple bacterial cells came into ...

Sweet innovation for citrus fruits

Researchers in Spain have developed sophisticated machines to sort citrus fruit before they reach consumers. The prototypes can detect and separate rotten oranges, and can classify mandarin segments. Citrus fruit field pickers ...

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