Oldest Scottish tartan ever found was preserved in a bog for over 400 years

Scotland's oldest true tartan dates to between 1500 and 1600.

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Newly discovered 'einstein' tile is a 13-sided shape that solves a decades-old math problem

A new 13-sided shape is the first example of an elusive "einstein" — a single shape that can be tiled infinitely without repeating a pattern.

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High school students may have just discovered an 'impossible' proof to the 2,000-year-old Pythagorean theorem

Two high school seniors have presented their proof of the Pythagorean theorem using trigonometry — which mathematicians thought to be impossible — at an American Mathematical Society meeting.

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Ancient fish hook suggests sharks were hunted off Israel's coast 6,000 years ago

Researchers unearthed the "shark hook" at a newly discovered village buried under a known archaeological site. Experts say it could be one of the first of its kind made in the area.

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Apple's cheapest iPad is now even cheaper, down to $269 at Amazon & Walmart

This iPad is the cheapest way to use the App Store, and you can save up to $80 at Amazon & Walmart.

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Scientists accidentally discover photosynthesis doesn't work exactly like we thought it did

Researchers have serendipitously discovered that a key step in photosynthesis can occur much earlier in the process than previously believed.

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The secrets to extreme longevity may be hiding with nuns... and jellyfish

Some people live to be well beyond 100. But what genes and environmental factors contribute to such extreme longevity, and what can we learn from other long-lived animals?

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