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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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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Lurch, a Watusi bull, had the largest horns in the world.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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