The population of western monarch butterflies in California dropped to a record low last year, according to a nonprofit conservation group.
Scientists found that the tough exteriors of cockroaches help them keep moving without losing much momentum when they bump into things.
S. Alan Stern, center, New Horizons’ principal investigator, surrounded by children at Johns Hopkins University Applied Physics Laboratory in Laurel, Md., on Tuesday.
One of the 2.1 million-year-old artifacts, right, recovered from a gully in western China, left, suggest that hominins may have left Africa far earlier than previously believed.
A robust ghost pipefish in waters off Indonesia. With some species of pipefish, fathers are susceptible to what scientists call the Bruce effect.
A Bajau diver spearfishes in Sulawesi. A study suggests these sea-dwelling people have evolved adaptations to deep diving.
Earth’s gravitational interactions with other planets — particularly Venus, because it is very near — affect the shape of its orbit.
Juul is under federal investigation for marketing its discreet, flash-drive-resembling e-cigarette product to youth.
Vice President Mike Pence at the National Space Council’s first meeting in Chantilly, Va., in October.
A protein found in the inner ear also exists in cells that help us perceive sour tastes, according to a new study.
“Decoding Watson,” a new film about Dr. James D. Watson, explores the gulf between his scientific brilliance and his views on race.
A screen grab of Emily Graslie's channel, The Brain Scoop, from a recent episode about skunk dissection.
Graduation at City College in New York in 2016. A study in Iceland focusing on education suggests that parental genes may help determine how long children stay in school.
A baobab tree at Epupa Falls in Namibia. Researchers suspect that Africa's "wooden elephants" are succumbing to prolonged droughts and increasing temperatures, which are parching the trees, leaving them unable to support the weight of their massive trunks.
The distribution of the sweet potato plant has baffled scientists. How could the plant arise from a wild ancestor in the Americas and wind up on islands across the Pacific?
The Sorpe reservoir in northwest Germany, one of four freshwater reservoirs observed in a recent study that found that carbon dioxide absorbed in lakes, rivers and streams can affect entire ecosystems.
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