Mars had an oxygen-rich atmosphere around 4 billion years ago
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
34
If you have 1 billion dollars and spend $1,000 every day, it would take you 2,740 years to go broke.
31
In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
81
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