Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Broccoli is ‘man-made’ through the breeding of different cabbage crops.
4
A pig's orgasm lasts for 30 minutes.
303
Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
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