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Your search has returned 438 articles:
  • News

    In lab tests, this gene drive wiped out a population of mosquitoes

    A new gene drive may push a species of malaria-carrying mosquito to extinction.

    In a small-scale laboratory study, the genetic engineering tool caused Anopheles gambiae mosquitoes to stop producing offspring in eight to 12 generations, researchers report September 24 in Nature Biotechnology. If the finding holds up in larger studies, the gene drive could be the first capable of wiping...

    09/24/2018 - 11:20 Genetics, Ecology
  • Wild Things

    A gentoo penguin’s dinner knows how to fight back

    In a fight between a pipsqueak and a giant, the giant should always win, right?

    Well, a battle between an underwater David and Goliath has revealed that sometimes the little guy can come out on top. He just needs the right armaments. The David in this case is the lobster krill. And instead of a slingshot, it’s armed with sharp pincers that can sometimes fight off a Goliath: the gentoo...

    09/04/2018 - 14:12 Animals, Ecology, Oceans
  • News

    In the animal kingdom, what does it mean to be promiscuous?

    MILWAUKEE — When it comes to the sex lives of animals, scientists have a slate of explicit terms to describe the proclivities of species. But researchers may be playing a little fast and loose with one of those words. Just what sort of activity qualifies an animal as promiscuous?

    A review of almost 350 studies published in scientific journals in 2015 and 2016 found that the label was...

    08/13/2018 - 07:00 Animals, Ecology
  • News in Brief

    With one island’s losses, the king penguin species shrinks by a third

    What was once the king of the king penguin colonies has lost 85 percent or more of its big showy birds since the 1980s, a drop perhaps big enough to shrink the whole species population by a third.

    In its glory days, an island called Île aux Cochons in the southern Indian Ocean ranked as the largest colony of king penguins. Satellite data suggest numbers peaked at around 500,000 breeding...

    08/01/2018 - 16:35 Animals, Conservation, Ecology
  • Reviews & Previews

    Got an environmental problem? Beavers could be the solution

    EagerBen GoldfarbChelsea Green Publishing, $24.95

    Most people probably don’t think of beavers until one has chewed through the trunk of a favorite tree or dammed up a nearby creek and flooded a yard or nearby road. Beavers are pests, in this view, on par with other members of the order Rodentia. But a growing number of scientists and citizens are recognizing the merits of these...

    07/27/2018 - 10:49 Animals, Ecology, Conservation
  • News in Brief

    The giant iceberg that broke from Antarctica’s Larsen C ice shelf is stuck

    Curl the fingers of your left hand over your palm and stick out your thumb like a hitchhiker. Now, you have a rough map of Antarctica — with the inside of your thumb playing the part of the Larsen C ice shelf, says glaciologist Ted Scambos of the National Snow and Ice Data Center in Boulder, Colo.

    About a year ago, a massive iceberg roughly the size of Delaware broke off from that ice...

    07/23/2018 - 07:00 Earth, Oceans, Ecology
  • News in Brief

    Bloodflowers’ risk to monarchs could multiply as climate changes

    Climate change could make a showy invasive milkweed called a bloodflower even more of a menace for monarch butterflies than it already is.

    Monarch caterpillars, which feed on plants in the milkweed family, readily feast on Asclepias curassavica. Gardeners in the southern United States plant it for its showy orange blooms, yet the species “is turning out to be a bit of a nightmare,” says...

    07/10/2018 - 18:58 Climate, Ecology, Animals
  • Reviews & Previews

    Why humans, and Big Macs, depend on bees

    Buzz: The Nature and Necessity of BeesThor HansonBasic Books, $27

    When you hear the word bee, the image that pops to mind is probably a honeybee. Maybe a bumblebee. But for conservation biologist Thor Hanson, author of the new book Buzz, the world is abuzz with thousands of kinds of bees, each as beautiful and intriguing as the flowers on which they land.

    Speaking from his “...

    07/08/2018 - 08:00 Animals, Agriculture, Ecology
  • The –est

    Each year painted lady butterflies cross the Sahara — and then go back again

    Move over, monarchs. The painted lady butterfly (Vanessa cardui) now boasts the farthest known butterfly migration.

    Though found across the world, the orange-and-brown beauties that live in Southern Europe migrate into Africa each fall, crossing the Sahara on their journey (SN Online: 10/12/16). But what happened after was a mystery because the butterflies disappeared. Researchers...

    06/20/2018 - 07:00 Animals, Ecology, Ecosystems
  • Wild Things

    Madagascar’s predators are probably vulnerable to toxic toads

    At some point eight to 10 years ago, some toads stowed away on a ship in Asia, possibly Ho Chi Minh City, and hitched a ride to Madagascar. Those invaders, Asian common toads, have been slowly spreading across the large island ever since.

    The toad’s skin contains a toxin that kills nearly anything that tries to eat the amphibian. Scientists have been warning of the toad’s danger to...

    06/19/2018 - 09:00 Ecology, Animals, Conservation