Cassini established that Enceladus may be habitable, but a scientifically useful failure to find life would require repeated, complementary measurements designed to make a false negative unlikely.
Radical-pair reactions in retinal cryptochromes offer a plausible quantum compass for birds, but neither the receptor in a living bird nor a subjective visual overlay has been directly demonstrated.
A squid preserved since the 1955–56 whaling season has been recognised as Mobydickia poseidonii, the only known member of a newly described oceanic squid family.
The cocoa farms draining aquifers in drought-stricken regions bear the true cost of your chocolate habit.
The study proposes one inherited genetic system but two independent completions of cellular metabolism, not two unrelated acts of abiogenesis.
A photon born in the Sun's core must zigzag through 170,000 years of dense plasma before it ever reaches your skin.
The 100,000-year estimate follows directly from 335.7 million square kilometres of deep seabed and a measured average visual-survey rate of 2.9 square kilometres per system per year.
A single quaking aspen in central Utah — 47,000 trunks, one root system, roughly 6,000 tonnes — is likely the heaviest living thing on Earth and, at 14,000 to 80,000 years old, among the oldest. Genetics is finally pinning down how it has held together for that long.
Zealandia is a coherent 4.9-million-square-kilometre body of continental crust, about 94 per cent submerged. Its classification depends on geology beneath the coastline, not a newly discovered landmass.
Scientists are banking on dormant microbes and oak boxes to survive five centuries—and on humanity remembering why it matters.
A speck of ancient Earth and our newborn Moon may have formed within moments of each other, upending how scientists understand the young solar system's violent beginning.
Mars's most disputed geological feature may finally reveal what it is: a shoreline where ancient water met stone.
A silicon carbide grain extracted from the Murchison meteorite, which fell on a Victorian dairy farm in 1969, was dated in 2020 to about seven billion years old — condensed in the atmosphere of a dying star more than two billion years before the Sun existed, and the oldest solid material ever held in a human hand.
Saudi Arabia sits on the largest continuous sand sea on Earth and still imports construction sand from Australia and Scotland, because thousands of years of wind erosion have polished its desert grains too smooth to bind with cement. The paradox of a country shipping in the material beneath its own feet is now a fixture of every Gulf megaproject.
The Greenland shark grows about a centimetre a year and does not reach sexual maturity until around 150, meaning pups born in the North Atlantic this year will not breed until the 22nd century.
In 1994, a New South Wales parks officer abseiled into a Blue Mountains canyon and found a stand of trees whose species was only known from 90-million-year-old fossils. Fewer than 100 wild Wollemi pines still exist, in a grove whose coordinates the Australian government keeps classified.
