Fossils of extinct squidlike creatures called ammonites located in a rock layer very close to the boundary between the Permian and Triassic periods.
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.
A computer-generated image of a single Neanderthal toe bone found in a Siberian cave in 2010.
A transparent hatchetfish, retrieved by researchers from the Woods Hole Oceanographic Institution, which is seeking to understand better the creatures that occupy the sea from 600 to 3,300 feet deep.
An artist’s rendering of an Earthlike exoplanet orbiting another. Scientists haven’t been able to measure an exoplanet’s tilt yet, but some suspect that a planet’s tilt is key to supporting life.
Dr. Jennifer A. Doudna. Three years ago, she helped make one of the most monumental discoveries in biology.
Humpback whales in the southern oceans around Antarctica appear to be breeding successfully, recovering their population.
Merino sheep on a farm in Alexandra, New Zealand. Scientists found that differences in the cells on a hair explain a sheep’s curls, and may offer insights for other mammals, like us.
A view from space of how the sun falls on Earth during solstices and equinoxes captured by EUMETSAT's Meteosat-9.
Scientists found that the tough exteriors of cockroaches help them keep moving without losing much momentum when they bump into things.
A transparent hatchetfish, retrieved by researchers from the Woods Hole Oceanographic Institution, which is seeking to understand better the creatures that occupy the sea from 600 to 3,300 feet deep.
Neil Gershenfeld of the Massachusetts Institute of Technology says that synthetic biology, which involves the creation of biological systems intended for specific purposes, can generate scientific advances as well as ethical questions.
A remnant from a Type 1A supernova observed in the Milky Way, one of the cosmic markers of how fast the universe is expanding. Observing exploding stars helped astronomers first discover the existence of dark energy nearly 20 years ago.
An assortment of zebra finches studied by Sarah Woolley, a neuroscientist at Columbia University. Dr. Woolley found that finches were expert at learning the songs of their fathers for later in life, when it comes time to find a mate.
Carl Hart, an associate professor at Columbia University, is the author of the book “High Price,” a mix of memoir and scientific research about drug addiction.
A woman prayed over the bodies of two Asian elephants that were electrocuted in Siliguri, India.
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