As if Komodo dragons didn't seem ferocious enough already, scientists have now discovered that the reptiles tear through flesh using a coating of iron on their teeth. It is now believed that dinosaurs such as T. rex may have been similarly endowed.

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Well-preserved bones of a two-tonne glyptodont revealed cut marks indicative of stone tools, suggesting that human hunter-gatherers had settled in the Americas around 21,000 years ago – some 5,000 years before people were thought to have arrived.

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For the first time, scientists have found that a tiny region of our brain shuts down to take micro-naps while we're awake. These same areas 'flicker' awake while we're asleep. This could offer pivotal insights into diseases linked to sleep dysregulation.

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Scientists have assembled the most complete woolly mammoth genome in 3D, thanks to an incredible “freeze-dried” specimen. With its DNA preserved in a glass-like state, chromosomes were found for the first time, and even gene expression patterns.

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For the first time, scientists have discovered that hippos get significant airtime when they're at full-trot, able to lift their huge barrel-shaped girth off the ground for around 15% of their stride. It's totally unique for mammals their size.

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Citizen scientists have been key to the discovery of two new species of hallucinogenic fungi, joining the ranks of 140 known types of these psychoactive mushrooms. One even has longstanding roots in traditional healing medicine in mountainous Lesotho.

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In a first, scientists have found that painted lady butterflies use favorable winds and a strategy of active flying and autopilot to cross the world nonstop. The flight, spanning five-to-eight days, takes up to half the adventurous animals' adult life.

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In pre-clinical trials, a small molecule effectively regrew neurons, reduced inflammation, and improved memory, speed, coordination, grip strength, and more. The finding could have a profound impact on aging and the diseases that accompany it.

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A never-before-seen species of horned, herbivorous dinosaur, a predecessor of the Triceratops, has been unveiled at the Natural History Museum of Utah. And its showy, distinctive headgear has earned it a name reminiscent of a god.

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This serene gap between Pyrenees mountains becomes abuzz with flying insects each year, as they journey across Europe. We may not always like to live with them, but we can't live without them – so paths like this are critical for all life on Earth.

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