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E.g., 12/19/2018
E.g., 12/19/2018
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  • South American maize varieties
  • scientists with hybrid rice plants
  • cactus spine poking a finger
Your search has returned 317 articles:
  • News

    Corn domestication took some unexpected twists and turns

    Corn eaten around the world today originated via a surprisingly long and complex process that started in what’s now southern Mexico around 9,000 years ago, a new study finds.

    People brought a forerunner of present-day corn plants, also known as maize, to South America from Mexico more than 6,500 years ago. Those plants still contained many genes from maize’s wild ancestor, teosinte, say...

    12/13/2018 - 14:00 Archaeology, Plants
  • News

    Hybrid rice engineered with CRISPR can clone its seeds

    After more than 20 years of theorizing about it, scientists have tweaked a hybrid variety of rice so that some of the plants produce cloned seeds. No plant sex necessary. The feat, described December 12 in Nature, is encouraging for efforts to feed an increasingly crowded world.

    Crossing two good varieties of grain can make one fabulous one, combining the best versions of genes to give...

    12/12/2018 - 15:52 Plants, Genetics, Sustainability
  • News in Brief

    Cactus spine shapes determine how they stab victims

    Scientists have unraveled some of the mechanical mysteries behind the pokes and prods of cacti.

    Like porcupine quills, the barbed spines of some cactus species easily puncture their prey but are difficult to remove. Smooth spines, however, puncture flesh easily and are removed just as readily, researchers report in the Nov. 21 Proceedings of the Royal Society B.

    That variation is...

    11/27/2018 - 06:00 Plants
  • The Science Life

    How researchers flinging salmon inadvertently spurred tree growth

    How much salmon would scientists sling if scientists could sling salmon? For one research team, the question isn’t hypothetical, and the answer is … tons.

    During 20 years of monitoring salmon populations in one southwest Alaskan stream, ecologists have found and flung a total 267,620 kilograms of dead fish into the forest. Those rotting carcasses leached enough nutrients to speed up tree...

    10/30/2018 - 13:54 Ecology, Animals, Plants
  • News

    Ancient South Americans tasted chocolate 1,500 years before anyone else

    Ancient South Americans domesticated and consumed cacao, the plant from which chocolate is made, long before other people did, a new study finds.

    Artifacts with traces of cacao suggest that an Amazonian culture located in what’s now Ecuador developed a wide-ranging taste for cacao products between 5,450 and 5,300 years ago, researchers report online October 29 in Nature Ecology &...

    10/29/2018 - 12:00 Archaeology, Plants
  • News

    Liverwort plants contain a painkiller similar to the one in marijuana

    A chemical compound found in liverworts may provide the pain and inflammation relief of pot’s THC but without the same kind of high.

    Both the molecule, called perrottetinene, and tetrahydrocannabinol, or THC — the mind-altering substance found in marijuana — have similar molecular structures. Lab tests with human brain cells and in mice have revealed that, like THC, perrottetinene easily...

    10/24/2018 - 17:34 Plants, Chemistry
  • News

    Plants engineered to always be on alert don’t grow well

    A tiny weed that slithers up through sidewalk cracks is helping scientists understand the sacrifices that plants make to protect themselves from pests.

    Most plants combat insects and other herbivores by sending out bitter chemicals through their leaves. Now by studying thale cress (Arabidopsis thaliana), a commonly found member of the mustard family, researchers found that energy spent...

    10/22/2018 - 16:09 Agriculture, Plants, Molecular Evolution
  • Science Visualized

    Dandelion seeds create a bizarre whirlpool in the air to fly

    When you’re essentially a little ball of floof, flying is hard.

    To ride the wind, dandelion seeds stir up a weird type of whirlpool in the air directly above them. The newly discovered way of moving through the air, described October 17 in Nature, resolves a long-standing question about how the seeds stay aloft.

    Dandelion seed flight is not unlike the flight of Mary Poppins:...

    10/17/2018 - 13:00 Biophysics, Plants
  • 50 years ago, a 550-year-old seed sprouted

    550-year-old seed sprouts — 

    A seed of the South America herb achira (Canna sp.), taken from an ancient Indian necklace, has germinated, and the young plant is growing well.… Carbon-14 dating of bones at the site sets the seeds’ age at about 550 years.… The plant from the old seed appeared to have a disturbed gravity orientation, but is still growing fairly normally. — Science News...

    10/10/2018 - 07:00 Plants, Archaeology
  • News

    Lemur study suggests why some fruits smell so fruity

    It’s a lovely notion, but tricky to prove. Still, lemurs sniffing around wild fruits in Madagascar are bolstering the idea that animal noses contributed to the evolution of aromas of fruity ripeness.

    The idea sounds simple, says evolutionary ecologist Omer Nevo of the University of Ulm in Germany. Plants can use mouth-watering scents to lure animals to eat fruits, and thus spread around...

    10/03/2018 - 14:12 Evolution, Plants, Animals