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An illustration of the pregnant ichthyosaur (Myobradypterygius hauthali), nicknamed Fiona, swimming 131 million years ago around what is now…

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An illustration of the pregnant ichthyosaur (Myobradypterygius hauthali), nicknamed Fiona, swimming 131 million years ago around what is now…

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In the mid 19th century, a strange idea was growing heavy in the ether: There…





NASA astronaut Zena Cardman, who is assigned to…

Alizee Zimmermann and her husband were rinsing off their dive gear on a relatively muggy January evening when the sky exploded with a dozen shimmering fireballs. “We saw the trails as it started to lose control,” Zimmermann told me. “Then…

Questions about the vastness of our world can leave us speechless. How many stars twinkle in our galaxy? How many grains of sand stretch across the Sahara? How many ants roam the Earth?
For a long time, most questions like these seemed…