Life
Looking for LUCA, everyone’s shared ancestor
You and all other living things descended from a single organism — our great-grand-germ. Scientists are studying modern genes to learn more about this very distant ancestor.
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Life
Scientists Say: Clone
This adaptable tech can help with everything from engineering medical microbes to preserving endangered species.
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Health & Medicine
Explainer: What are ultraprocessed foods?
Packed with chemical additives, these foods have become a major part of our diets. Scientists have begun to worry about how ultraprocessed foods may impact health.
Technically Fiction
Physics
Could a Star Wars lightsaber work?
The main problem with real-world lightsabers is that they would pass through each other. This means no intergalactic duels between Jedis and Siths.
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As winters warm, athletes must cope with harder snow and tricky ice
Ice arenas and artificial snow now dominate the winter Olympics. Athletes there — and everywhere — may need to adjust how they train and perform.
