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E.g., 01/18/2019
E.g., 01/18/2019
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  • Sehuencas water frog
  • Aedes aegypti mosquito
  • tetrapod robot
Your search has returned 4035 articles:
  • News

    This rediscovered Bolivian frog species survived deadly chytrid fungus

    Save for one “lonely” survivor in captivity, the Sehuencas water frog hadn’t been seen in the wild since 2008. That’s when its numbers collapsed, primarily due to chytridiomycosis, a fungal disease that has devastated frog populations worldwide. Fearing the species might be extinct, some scientists spent 10 years searching the Bolivian mountain forests for the amphibians. Now, they’ve found a...

    01/17/2019 - 06:00 Animals, Conservation
  • News

    Bacterial compounds may be as good as DEET at repelling mosquitoes

    Molecules made by bacteria keep mosquitoes at bay. The compounds are a newfound potential stand-in for DEET, a ubiquitous chemical used in most commercially available mosquito repellents in the United States.

    In lab tests, the molecules were as effective as DEET in stopping Aedes aegypti mosquitos, which can carry Zika, dengue and yellow fever, from snacking on artificial blood,...

    01/16/2019 - 14:18 Animals, Health
  • News

    A four-legged robot hints at how ancient tetrapods walked

    Orobates pabsti lived between 280 million and 290 million years ago, but it was pretty advanced at doing the locomotion.

    Using computer simulations, re-created skeletons, fossil trackways and a walking robot dubbed the OroBOT, scientists found that this ancient four-footed creature had a surprisingly efficient gait. The result suggests that developing a more advanced way of walking may...

    01/16/2019 - 13:27 Paleontology, Evolution
  • News

    How worm blobs behave like a liquid and a solid

    TAMPA, Fla. — Blobs of worms flow like a fluid, plop like a solid and fascinate scientists.

    A worm by itself is as solid as any other living animal. But a mass of aquatic California blackworms tangled together flows through a tube like a liquid. Pouring, heating and otherwise playing with blobs of worms shows that a tangled mass of them has properties of both fluids and solids, Saad...

    01/11/2019 - 13:11 Animals, Biophysics
  • News

    Poison toilet paper reveals how termites help rainforests resist drought

    It took hundreds of teabags and thousands of rolls of toilet paper for tropical ecologist Kate Parr and her colleagues to demonstrate that termites help tropical rainforests resist drought. Forests with more termites show more soil moisture, leaf litter decomposition and seedling survival during a drought than forests with fewer termites, the scientists report January 10 in Science.

    The...

    01/10/2019 - 14:00 Animals, Ecosystems
  • News in Brief

    Floating seabirds provide a novel way to trace ocean currents

    Seabirds are like feathered buoys. Gently rafting on the ocean’s surface, these birds go with the flow, making them excellent proxies for tracking changes in a current’s speed and direction.

    Oceanographers traditionally use radar, floating buoys or autonomous underwater vehicles to measure ocean current velocities, which can affect the climate, ecosystems and the movement of important...

    01/10/2019 - 09:00 Oceans, Ecology
  • 50 years ago, scientists studied orcas in the wild for the first time

    The astonishing capture [of seven orcas off British Columbia] has made possible the first scientific study of killer whales in their more or less natural environment…. There is little doubt that the animals have a sophisticated language with which they can communicate with each other, but practically nothing is known about the complexity of their speech. — Science News, January 18,...
    01/10/2019 - 08:00 Animals
  • The Name Game

    Studies can be in vitro, in vivo and now ‘in fimo’ — in poop

    Poop contains a lot of valuable scientific information. Researchers can monitor microbes, track enzyme activity or hunt for DNA to gather clues about overall health.

    There’s so much one can learn from the waste product that microbiologist Aadra Bhatt at the University of North Carolina at Chapel Hill decided there should be a word for that research — something in the same vein as “in...

    01/09/2019 - 07:00 Health, Microbes
  • News in Brief

    A protein in mosquito eggshells could be the insects’ Achilles’ heel

    Mosquito researchers may have hatched a new plan to control the bloodsuckers: Break their eggshells.

    A protein called eggshell organizing factor 1, or EOF1, is necessary for some mosquito species’ eggs and embryos to develop properly, a new study finds. Genetically disrupting production of that protein in Aedes aegypti mosquitoes caused about 60 percent of their normally dark eggshells...

    01/08/2019 - 14:00 Animals, Genetics, Development
  • News

    Green darner dragonflies migrate a bit like monarch butterflies

    The monarch butterfly isn’t the only insect flying up and down North America in a mind-boggling annual migration. Tests show a big, shimmering dragonfly takes at least three generations to make one year’s migratory loop.

    Ecologist Michael Hallworth and his colleagues pieced together the migration of the common green darner, described December 19 in Biology Letters, using data on forms of...

    01/07/2019 - 07:00 Animals, Chemistry