Cilia are hairlike structures that project from cells. They can move in coordinated, rhythmic waves that propel organisms through water.
Marco Zozaya in March near his home in Mexico. He aspires to be a science communicator like Neil deGrasse Tyson, but faces the conundrum of internet audiences and algorithms that may prefer drama over scientific information.
The tree pipit migrates to and from Africa and Europe each year.
“I am a retired patent attorney,” said Barbara Rae-Venter. “None of this is a planned event.”
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.
Researchers used a laser pulse to study superionic water, which is simultaneously solid and liquid.
Zhong Zhong, one of two cloned monkeys at the Chinese Academy of Sciences in Shanghai. They are the first primates cloned by transferring DNA into fetal cells.
Across the country, biohackers — hobbyists, amateur geneticists, students and enthusiasts — are practicing gene editing, concerning some bioterrorism experts.
A view of the Milky Way and neighboring galaxies, containing more than a billion stars, released by the European Space Agency’s Gaia mission.
Signs of a henge, a man-made enclosure from thousands of years ago thought to serve as a gathering place, were photographed by a camera-enabled drone on Monday.
A computer-generated image of a single Neanderthal toe bone found in a Siberian cave in 2010.
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 march in Washington of women demanding legalization of abortion in 1971. With President Trump about to nominate a second justice to the Supreme Court, legal experts are debating what a more conservative court would mean for abortion rights.
Almost 230 feet tall and weighing more than 3 million pounds, the Falcon Heavy is more powerful than any other rocket flying today.
Stone pendants and earrings recovered from the Lothagam North Pillar Site in Kenya, which is about 5,300 years old. It was used as a burial site for about 700 years. Then, abruptly and mysteriously, the burials stopped.
The spotted lanternfly can lay eggs on almost any surface and feeds on a broad range of plants, including many commercial crops.
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