Today's biggest science news: New Hubble image of 3I/ATLAS | Largest spinning structure in the universe | 'Cold Supermoon' tonight
Live blog Thursday, Dec. 4, 2025: Your daily feed of the biggest discoveries and breakthroughs making headlines.
Planet Earth
Death Valley's 'world's hottest temperature' record may be due to a human error
A new analysis of July temperatures in Death Valley between 1923 and 2024 suggests the world record near-surface air temperature of 134 F measured in July 1913 may be erroneous.
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Trio of 'black mesas' leftover from Paleozoic era spawn rare sand dunes in the Sahara
Earth from space A 2023 astronaut photo shows three dark hills, or mesas, towering above part of the Sahara desert in southern Mauritania. The structures are remnants of a single Paleozoic era formation, and have helped to create a series of striking sand dunes.
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Health
A woman got a rare parasitic lung infection after eating raw frogs
In an unusual case, a woman developed a parasitic infection in her lungs, when more typically, the parasite stays just under the skin.
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Animals
Anacondas became massive 12 million years ago — and it worked so well, they haven't changed size since
The snakes stayed large and thrived even when cooling temperatures and shrinking habitats killed off other giant reptiles millions of years ago.
Human Behavior
Live Science crossword puzzle #22: Subatomic particle with a positive charge — 13 across
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!
Physics & Mathematics
Law of 'maximal randomness' explains how broken objects shatter in the most annoying way possible
A new mathematical equation describes the distribution of different fragment sizes when an object breaks. Remarkably, the distribution is the same for everything from bubbles to spaghetti.
World's largest neutrino detector starts up — with incredible results
Deep underground in southern China, there is a 20,000-ton tank of liquid that can detect neutrinos. Named JUNO, the detector's first results are in — and they're very promising.
Did a NASA telescope really 'see' dark matter? Strange gamma-rays spark bold claims, but scientists urge caution
A new study says observations from the NASA Fermi space telescope suggest a halo of dark matter around the center of our galaxy, but more information is needed to confirm the result.
Chemistry
Scientists invent way to use E. coli to create and dye rainbow-colored fabric in the lab
Scientists have used a novel method to create sustainable, rainbow-colored fibers using bacteria in the lab.
Technology
When an AI algorithm is labeled 'female,' people are more likely to exploit it
People who played the “Prisoner’s Dilemma” were less likely to cooperate when the other player was a male human or AI, and exploited female players.
Science history: Computer scientist lays out 'Moore's law,' guiding chip design for a half century — Dec. 2, 1964
At a small local chapter meeting of a professional society, Gordon Moore's talk laid out the rudiments of what would become "Moore's law, which would govern the electronics industry for a half century.
