Sharks existed approximately 400 million years ago, predating trees by 50 million years
Sharks existed approximately 400 million years ago, predating trees by 50 million years
There are about 7,000 languages in the world — one goes extinct roughly every two weeks
Languages face extinction at a rate of approximately 14 per year
The observable universe is about 93 billion light-years in diameter
The observable universe spans approximately 93 billion light-years across
The footprints on the Moon will last millions of years — there's no wind or water to erode them
Moon's lack of atmosphere and liquid water preserves footprints indefinitely
Your DNA stretched end to end would reach the Sun and back over 600 times
Human DNA length: 2 meters, Sun-Earth distance: 150 million km, repetitions: 900,000,000
The printing press was invented by Gutenberg around 1440 — but China had movable type 400 years earlier
Gutenberg's press, circa 1440, followed China's 1000-year-old movable type innovation
Beer was first brewed around 5,000 BC in Mesopotamia — some of the oldest recipes survive
Beer originated circa 5,000 BC in ancient Mesopotamia
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