The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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If Earth's history was condensed into twenty-four hours, life would've appeared at around 4am, land plants at 10:24pm, dinosaur extinction at 11:41pm, and human history would’ve began at 11:58:43pm.
21
There is a persistent storm in Venezuela that produces lightning 140 to 160 nights a year, 10 hours per day and up to 280 times per hour and has been going since at least the 16th century.
25
Your body is creating and killing about 2.4 million red blood cells per second.
17
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
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