If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
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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
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
94
The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
No one knows Albert Einstein's last words. Just before he passed, he spoke several words in German, but his nurse only knew English.
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