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Your search has returned 403 articles:
  • Science Ticker

    Whales feast when hatcheries release salmon

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    Humpback whales, those innovative foodies, have discovered their own pop-up restaurants.

    Migrant humpbacks returning to southeastern Alaska in spring are the first of their kind known to make routine visits to fish hatcheries releasing young salmon into the sea, says marine ecologist Ellen Chenoweth.

    The whales are “40 feet long and they’re feeding on fish that...

    07/11/2017 - 19:05 Animals, Ecology, Science & Society
  • News

    How to eavesdrop on kelp

    BOSTON — If kelp growing in an underwater forest makes a sound, such noises could be used to keep tabs on ocean health.

    Listening to how projected sound reverberates through kelp beds allows scientists to eavesdrop on environmental factors such as water temperature and photosynthetic activity, bioacoustician Jean-Pierre Hermand reported June 28 at a meeting of the Acoustical Society of...

    07/06/2017 - 06:00 Plants, Ecology
  • News in Brief

    Male cockatoos have the beat

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    Like 1980s hair bands, male cockatoos woo females with flamboyant tresses and killer drum solos.

    Male palm cockatoos (Probosciger aterrimus) in northern Australia refashion sticks and seedpods into tools that the animals use to bang against trees as part of an elaborate visual and auditory display designed to seduce females. These beats aren’t random, but truly...

    06/28/2017 - 14:45 Animals, Ecology
  • Wild Things

    Drowned wildebeests can feed a river ecosystem for years

    More than a million wildebeests migrate each year from Tanzania to Kenya and back again, following the rains and abundant grass that springs up afterward. Their path takes them across the Mara River, and some of the crossings are so dangerous that hundreds or thousands of wildebeests drown as they try to traverse the waterway.

    Those animals provide a brief, free buffet for crocodiles and...

    06/27/2017 - 09:00 Animals, Ecology
  • Science Stats

    Earth’s dry zones support a surprising number of trees

    Earth’s dry regions have more trees than once thought — a hopeful note in the fight against climate change.

    An analysis of high-resolution satellite imagery reveals that drylands globally have 40 to 47 percent more tree cover (an extra 467 million hectares) than reported in earlier estimates. An international team of researchers used Google Earth and Collect Earth, a program developed by...

    06/26/2017 - 07:00 Ecology
  • Science Visualized

    Big slimy lips are the secret to this fish’s coral diet

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    Tubelip wrasses eat dangerously, daring to dine on sharp corals lined with stinging cells. New images reveal the fish’s secret to safe eating: lubing up and planting a big one on their dinner.

    “It is like sucking dew off a stinging nettle. A thick layer of grease may help,” says David Bellwood, a marine biologist at James Cook University in Townsville, Australia, who...

    06/05/2017 - 17:50 Animals, Ecology
  • Science Ticker

    Higher temperatures could trigger an uptick in damselfly cannibalism

    A warmer climate could put some damselflies in distress, as others get bigger and hungrier.

    Because of differences in hatching time, nymphs — the immature form of the insects — vary in size. Sometimes when ponds are overcrowded, other food options are scarce or size differences are significant, bigger, older nymphs nosh on the little nymphs. While temperature doesn’t typically affect...

    05/16/2017 - 19:05 Climate, Animals, Ecology
  • News in Brief

    Watch male cuttlefish fight over a female in the wild

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    The Bro Code apparently does not exist among wild cuttlefish. The first field video of male European cuttlefish (Sepia officinalis) getting physical over a female shows that they are not above stealing another guy’s girl.

    Cuttlefish, cephalopods known for their ability to alter their skin color, have complex and competitive courtship rituals. While scientists have...

    05/12/2017 - 07:00 Animals, Ecology
  • News

    Seabirds use preening to decide how to divvy up parenting duties

    Seabirds called common murres appear to use preening as a way to negotiate whose turn it is to watch their chick and who must find food. And when one parent is feeling foul, irregularities in this grooming ritual may send the other a signal that all is not well, researchers report in the July issue of The Auk: Ornithological Advances.

    “The fascinating part of this study is the inference...

    05/09/2017 - 07:00 Animals, Ecology
  • Mystery Solved

    Hawk moths convert nectar into antioxidants

    Hawk moths have a sweet solution to muscle damage.

    Manduca sexta moths dine solely on nectar, but the sugary liquid does more than fuel their bodies. The insects convert some of the sugars into antioxidants that protect the moths’ hardworking muscles, researchers report in the Feb. 17 Science.

    When animals expend a lot of energy, like hawk moths do as they rapidly beat their wings...

    04/17/2017 - 07:00 Ecology, Microbiology