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A panorama created from images taken by the rover Curiosity while it was working at a site called ‘Rocknest’ in 2012. NASA/JPL-Caltech/Malin Space Science Systems

Ancient Mars may have had a carbon cycle − a new study suggests the red planet may have once been warmer, wetter and more favorable for life

NASA’s Curiosity rover has spotted carbon-containing minerals that can tell scientists more about what ancient Mars’ atmosphere may have looked like.
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Do Inuit languages really have many words for snow? The most interesting finds from our study of 616 languages

Can you guess which languages score the highest for terms relating to ‘love’, ‘death’, ‘canoe’ or ‘sheep’? We made a tool to help you explore our extensive dataset.
In March 2023, the U.S. Food and Drug Administration approved naloxone as a nonprescription nasal spray to reverse the effects of an opioid overdose. Michael Siluk/UCG/Universal Images Group via Getty Images

Animal tranquilizers found in illegal opioids may suppress the lifesaving medication naloxone − and cause more overdose deaths

Increasingly, these types of tranquilizers are turning up in fentanyl, oxycodone and other illegal opioids.
How many stairs would you climb for that payoff? Ozgur Donmaz/DigitalVision via Getty Images

Hard work feels worth it, but only after it’s done – new research on how people value effort

Researchers probed what psychologists call the ‘paradox of effort’ to learn how different people value work they could do in the future or that they’ve already accomplished in the past.
Your skin cells can generate electricity when wounded. Torsten Wittmann, University of California, San Francisco/NIH via Flickr

Cells lining your skin and organs can generate electricity when injured − potentially opening new doors to treating wounds

Textbooks usually depict the epithelial cells encasing the interior and exterior of your body as passive barriers. But researchers discovered they can produce electrical signals like neurons.

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