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E.g., 03/20/2019
E.g., 03/20/2019
Your search has returned 83 images:
  • a camera sitting on a melt pond
  • Macrotermes termites
  • beaver swimming
Your search has returned 97 articles:
  • Feature

    What happens when the Bering Sea’s ice disappears?

    Peggy’s data were a bit of a shock.

    From an anchored vantage point in an expanse of the southeastern Bering Sea west of Alaska, Peggy, or mooring M2, had monitored conditions in the water for 25 years. A line of sensors extended down more than 70 meters to where Peggy was tethered to the seafloor, collecting information on temperature, salinity and other properties of the water.

    ...

    03/14/2019 - 06:45 Climate, Oceans, Ecosystems
  • 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
  • Feature

    Beavers are engineering a new Alaskan tundra

    In a broad swath of northwestern Alaska, small groups of recent immigrants are hard at work. Like many residents of this remote area, they’re living off the land. But these industrious foreigners are neither prospecting for gold nor trapping animals for their pelts. In fact, their own luxurious fur was once a hot commodity. Say hello to Castor canadensis, the American beaver.

    Much like...

    11/28/2018 - 09:00 Ecosystems, Ecology, Animals
  • Feature

    How mammoths competed with other animals and lost

    The Gray Fossil Site, a sinkhole in northeastern Tennessee, is full of prehistoric treasures. Between 7 million and 4.5 million years ago, rhinoceroses, saber-toothed cats and other creatures, even red pandas, perished here by the edge of a pond. But that bounty of fossils pales next to the site’s biggest find: a mastodon’s skeleton, nearly 5 million years old, preserved in exquisite detail...

    11/13/2018 - 12:30 Ecosystems, Archaeology, Paleontology
  • The Science Life

    Confused mayflies wreak havoc on a Pennsylvania bridge

    Mayflies swarming a central Pennsylvania bridge over the Susquehanna River are a good thing, and a bad thing. Before the 1972 Clean Water Act, the river was too polluted to support the primitive aquatic insects. So their comeback is a sign that the water is healthier, says forensic entomologist John Wallace of nearby Millersville University.

    But those swarms have become a nighttime...

    09/16/2018 - 08:00 Ecosystems, Pollution
  • Feature

    A freshwater, saltwater tug-of-war is eating away at the Everglades

    The boardwalk at Pa-hay-okee Overlook is a brief, winding path into a dreamworld in Everglades National Park. Beyond the wooden slats, an expanse of gently waving saw grass stretches to the horizon, where it meets an iron-gray sky. Hardwood tree islands — patches of higher, drier ground called hammocks — rise up from the prairie like surfacing swimmers. The rhythmic singing of cricket frogs is...

    08/20/2018 - 09:00 Ecosystems, Earth
  • News

    Shallow reef species may not find refuge in deeper water habitats

    Deep water reefs are unlikely to be safe harbors for many fish and coral species from shallow reefs threatened by climate change and human activity. Shallow water creatures may have trouble adapting to conditions in the deep, scientists report in the July 20 Science. Plus, deep reefs are facing the same threats that are putting shallower ones at risk.

    The study deals a blow to the “deep...

    07/19/2018 - 15:21 Oceans, Ecosystems, Climate
  • News

    Bird poop helps keep coral reefs healthy, but rats are messing that up

    When invasive rats chow down on island seabirds, coral reefs suffer.

    Researchers studied islands with and without the rodents in the Chagos Archipelago in the Indian Ocean. On rat-free isles, there were on average 1,243 birds per hectare compared with about two birds per hectare on rat-infested islands, the team found. And these rodentless islands had healthier coral reef ecosystems. The...

    07/11/2018 - 13:02 Ecosystems, Animals, Oceans
  • 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
  • Science Ticker

    Treating roads with oil and gas wastewater may spread harmful pollution

    Each year, finding and extracting oil and gas for energy produces hundreds of billions of gallons of wastewater in the United States. When recycled and spread on roads, the wastewater can leak its contaminants, including salt, radioactive elements and chemicals that interfere with hormones, into groundwater and surface water, researchers report May 30 in Environmental Science and Technology....

    05/30/2018 - 17:49 Pollution, Ecosystems