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Mummified forest found on arctic island

An ancient mummified forest, buried in a landslide millions of years ago, has been found in the Canadian arctic on a treeless island. The forest was discovered recently by a research team who'd heard a surprising story from rangers in Quttinirpaaq National Park. The park is located onEllesmere Island (see

Coca leaves first chewed 8,000 years ago

Evidence has pushed back by at least 3,000 years the use of coca leaves being chewed for medicinal purposes. Coca leaves contain a range of chemical compounds known as alkaloids. In modern times, the most notable among them is cocaine, extracted and purified by complex chemical means.But the chewing of