It's possible to die from a broken heart; it's called Stress Cardiomyopathy.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
4
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
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