natural sciences
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What We Will Never Know
There is a realm the laws of physics forbid us from accessing, below the resolving power of our most powerful microscopes and beyond the reach of our most sensitive telescopes. There’s no telling what might exist there — perhaps entire universes.
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Signs of Water Seen in Massive Galaxy of the Early Universe
Scientists studying the most massive known galaxy in the early universe have found evidence of water in it, an intriguing observation that sheds light on how the universe has evolved.
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When Will Force Shields Be Real?
When the aliens come for our organs, the tides for our coastal cities, the supervillains for their own nihilist world-obliterating amusement, how exactly will we protect ourselves? From decades of sci-fi, the answer is clear: some kind of force shield arrangement. If you’re trying to deflect bullets, impress small children, and/or save a major U.S.…
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How Do We Know How Old Fossils Are?
Paleolithic hunters built mammoth traps in what is now Mexico some 14,700 years ago. An unknown sea creature left footprints in sand some 550 million years ago, making them the oldest known footprints on Earth. The mysterious Denisovan humans reached southeast Asia 160,000 years ago, as evidenced by a jawbone found on the Tibetan Plateau.…