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E.g., 12/19/2018
E.g., 12/19/2018
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  • Anopheles gambiae mosquitoes
  • northern Australian bettong
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Your search has returned 2150 articles:
  • Year in Review

    Humans wiped out mosquitoes (in one small lab test)

    For the first time, humans have built a set of pushy, destructive genes that infiltrated small populations of mosquitoes and drove them to extinction.

    But before dancing sleeveless in the streets, let’s be clear. This extermination occurred in a lab in mosquito populations with less of the crazy genetic diversity that an extinction scheme would face in the wild. The new gene drive,...

    12/17/2018 - 08:26 Animals, Genetics, Health
  • News

    Endangered northern bettongs aren’t picky truffle eaters

    A small endangered marsupial with a taste for truffles may be a linchpin in one kind of Australian forest — and the evidence is in the animal’s poop.

    Northern bettongs feast on truffles, the meaty, spore-producing parts of certain fungi. Plenty of animals eat a selection of these subterranean orbs from time to time. But analyses of the scat from northern bettongs (Bettongia tropica)...

    12/14/2018 - 13:21 Animals, Conservation
  • News

    Counting the breaths of wild porpoises reveals their revved-up metabolism

    By counting harbor porpoise breaths, researchers have come up with a new way to judge the animals’ hard-to-measure metabolism. The trick shows that the animals can burn energy more than twice as fast as humans.

    Researchers analyzed the several thousand puff-huff respiratory sounds recorded per day from each of 13 harbor porpoises swimming freely in Danish waters. Including just everyday...

    12/14/2018 - 06:00 Animals, Physiology, Conservation
  • 50 years ago, armadillos hinted that DNA wasn’t destiny

    64 armadillos threaten a theory —

    Armadillos come in fours, quadruplet offspring from a single egg, and are endowed with identical genes. Yet, the quadruplets are often not identical, a fact that calls into question the assumption that genes encased in the nucleus of the cell are the sole determinants of heredity. — Science News, November 30, 1968

    Update

    What comes naturally to...

    12/13/2018 - 07:00 Animals, Genetics
  • Rethink

    Nearly 200 Great Barrier Reef coral species also live in the deep sea

    Nearly 200 species of Great Barrier Reef corals have found a second home in the deep ocean. That’s six times as many species as previously thought to be living in the dark, cold waters off northeastern Australia, researchers report December 12 in Proceedings of the Royal Society B.

    Perhaps more important than the number of species cataloged at those depths is the fact that every...

    12/11/2018 - 19:05 Animals, Oceans, Climate
  • News

    Here’s how geckos (almost) walk on water

    Add water aerobics to the list of the agile gecko’s athletic accomplishments.

    In addition to sticking to smooth walls and swinging from leaves, geckos can skitter along the surface of water. By slapping the water with all four limbs to create air bubbles and exploiting the surface tension of water, the reptiles can travel at speeds close to what they can achieve on land, according to a...

    12/06/2018 - 11:17 Animals
  • News in Brief

    Pea aphid youngsters use piggyback rides to escape a crisis

    First it’s mammal bad breath. Then it’s babies pestering for piggyback rides. A near-death experience is tough on pea aphids.

    When warm, moist breath signals that some cow or other giant is about to chomp into foliage, tiny green aphids feeding on that foliage drop toward the ground by the hundreds (SN Online: 8/10/10). “It literally rains aphids,” says ecologist Moshe Gish, who in 2010...

    12/05/2018 - 20:00 Animals, Ecology
  • Letters to the Editor

    Readers inquire about a Neptune-sized moon, nuclear pasta and more

    Exomoonmoon

    A sighting by the Hubble Space Telescope provides more evidence that there’s a Neptune-sized moon, dubbed Neptmoon, orbiting the exoplanet Kepler 1625b, Lisa Grossman reported in “Hubble may have spotted the first known exomoon” (SN: 10/27/18, p. 14).

    “If Neptmoon actually exists, could it possibly have moons of its own?” online reader MAdScientist72 asked. “And what...

    12/05/2018 - 05:00 Physics, Astronomy, Animals
  • News

    Rebel honeybee workers lay eggs when their queen is away

    Even honeybee queens have rebellious kids.

    In a colony of European honeybees (Apis mellifera), only the queen lays eggs that hatch into female workers who maintain the hive and nurse the young. But at times a colony experiences periods of queenlessness, when the old queen has left and a new one isn’t ready. Some of the queen’s left-behind worker daughters seize this chance to lay their...

    12/04/2018 - 08:00 Animals
  • News

    An acid found in soil may make a disease killing deer less infectious

    An acid found in rich humus soil breaks down the misfolded brain proteins — called prions — that cause chronic wasting disease.

    When concentrations of humic acid similar to those found in soils were applied to diseased elk brain tissue, chemical signatures of the infectious prions were nearly erased, researchers report online November 29 in PLOS Pathogens. That suggests that the acid...

    11/30/2018 - 06:00 Toxicology, Animals, Microbiology