Elephants, like their forebears mastodons and mammoths, carry a unique gene whose proteins kill off potentially cancerous cells.
An illustration of Haringtonhippus francisci, an extinct horse species that was found in North America during the last ice age. Rick Hunter, a Utah paleontologist, said the horse, whose skeleton was discovered in a Utah backyard, may have looked similar to this.
The chambered nautilus propels itself by sucking in and shooting out water, and uses far less energy to do it than other swimmers that use jet propulsion.
The Tremaster mirabilis starfish, one of several species of sea star living in deep waters off Greenland’s coast that have surprisingly complex eyes.
Earth’s gravitational interactions with other planets — particularly Venus, because it is very near — affect the shape of its orbit.
Microscopic tubular structures found within red garnets may be caused by the burrowing of microorganisms.
Sweltering temperatures on the surface of Earth’s northern hemisphere notwithstanding, the sun and Earth are currently three million miles farther from each other than when they’re closest.
The spotted lanternfly can lay eggs on almost any surface and feeds on a broad range of plants, including many commercial crops.
A thermal image of elephants, part of an effort to apply tools from astronomy to help conservationists and fight poaching.
A view of the Milky Way and neighboring galaxies, containing more than a billion stars, released by the European Space Agency’s Gaia mission.
The Berkeley Pit, a mile-wide hole in Butte, Mont., where copper used to be mined, currently holds 50 billion gallons of contaminated water. It's hoped that the water, once treated, could be a new "headwaters" for a section of the Silver Bow Creek that remains unrestored.
A victim of starvation during the Dutch famine of 1944-45. Women pregnant during the period gave birth to babies who were affected by health problems throughout their lives.
Musk oxen, massive mammals that live on Arctic tundra, are seeing their numbers dwindle as warmer, rainier winters limit access to food, researchers report.
Orcas from pod J in Puget Sound just west of Seattle. The number of orcas in the area, listed as endangered since 2005, has dwindled to a 30-year low.
The marbled crayfish is a mutant species that clones itself, scientists report. The population is exploding in Europe, but the species appears to have originated only about 25 years ago.
S. Alan Stern, center, New Horizons’ principal investigator, surrounded by children at Johns Hopkins University Applied Physics Laboratory in Laurel, Md., on Tuesday.
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