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The Boeing Starliner launch was halted with just minutes to spare. The mission to the International Space Station was to carry two NASA astronauts. Starliner has already faced years of delays.
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The same solar region that brought an outburst of night-time beauty in early May is coming back around. But things have changed, a space weather expert tells NPR.
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Presidential candidate Robert F. Kennedy Jr. spoke about a time when, as he put it, "A worm ... got into my brain and ate a portion of it and then died." Here's a global perspective on these worms.
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Millions of new parents in the U.S. are swamped by medical debt during and after pregnancy, forcing many to cut back on food, clothing, and other essentials.
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New research documents how many children lost a parent to an opioid or other overdose in the period from 2011 to 2021. Bereaved children face elevated risks to their physical and emotional health.
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Earth, Mars and Venus all looked pretty similar when they first formed. Today, Mars is dry, cold, and dusty; Venus has a hot, crushing atmosphere. Why did these sibling planets turn out so different?
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Every spring, a remarkable sight unfolds in the San Gabriel Mountains north of Los Angeles, as thousands of songbirds fly north.
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Climate journalist Zoë Schlanger says research suggests that plants are indeed "intelligent" in complex ways that challenge our understanding of agency and consciousness. Her book is The Light Eaters.
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Boeing's Starliner program has been plagued with delays and design problems for several years.
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NASA Administrator Bill Nelson told NPR he sees the U.S. in an urgent race with China to find water on the moon, and that he trusts SpaceX, despite Elon Musk's increasingly controversial profile.
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A father and daughter discovered fossil remnants of a giant ichthyosaur that scientists say may have been the largest-known marine reptile to ever swim the seas.
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What's a typical vacation activity for doctors? Work. A new study finds that most physicians do work on a typical day off. In this essay, a family doctor considers why that is and why it matters.