Search Content

E.g., 07/23/2016
E.g., 07/23/2016
Your search has returned 558 images:
  • dinosaur illustration
  • phytoplankton
Your search has returned 2738 articles:
  • News

    How dinosaurs hopped across an ocean

    Two land bridges may have allowed dinosaurs to saunter between Europe and North America around 150 million years ago.

    The bridges would explain how dinosaurs, mammals and other animals were able to hop from one continent to the other after the Atlantic Ocean formed during the breakup of the Pangaea supercontinent. Some species of Stegosaurus, for instance, appear in the fossil...

    07/22/2016 - 10:48 Earth, Paleontology
  • News

    Phytoplankton’s response to climate change has its ups and downs

    Armor-plated marine microbes surprised scientists a few years ago by recovering their shell-building prowess in levels of ocean acidification expected under future climate change. But those gains were short-lived, new research shows.

    For four years, marine ecologist Lothar Schlüter and colleagues steeped Emiliania huxleyi phytoplankton in seawater acidified by carbon dioxide....

    07/08/2016 - 15:24 Climate, Evolution, Oceans
  • What Were They Thinking?

    Underwater city was built by microbes, not people

    When snorkelers discovered what appeared to be ancient stonework off the coast of the Greek island of Zakynthos in 2013, archaeologists sent to the site thought the odd rocks might be the ruins of an ancient city. But among the columns, bagel-shaped rings and paving stone‒like rocks, they found no telltale pottery shards or other artifacts. Soon after, geochemist Julian Andrews of England’s...

    07/08/2016 - 12:30 Oceans, Earth, Archaeology
  • Wild Things

    Lionfish invasion comes to the Mediterranean

    Lionfish are beautiful in aquariums, but they are a menace in the waters of the western Atlantic. Armed with venom and a reproductive ability that lets a single fish produce 2 million eggs each year, the fish have managed to establish themselves in ocean waters from Florida to South America and throughout much of the...

    07/06/2016 - 07:54 Animals, Oceans
  • News in Brief

    Nuclear bomb debris can reveal blast size, even decades later

    A new type of fallout forensics can reconstruct nuclear blasts decades after detonation. By measuring the relative abundance of various elements in debris left over from nuclear explosions, researchers say they can accurately estimate the amount of energy released during the initial blast.

    As proof of concept, the researchers estimated the yield of the 1945 Trinity nuclear test in New...

    07/05/2016 - 15:17 Chemistry, Earth, Science & Society
  • News

    Warming alters mountain plant’s sex ratios

    In Colorado’s Rocky Mountains, male and female valerian plants have responded differently to hotter, drier conditions, a new study shows. Rapidly changing ratios of the sexes could be a quick sign of climate change, the researchers say.

    Valerian (Valeriana edulis) plants range from hot, scrubby lowlands to cold alpine slopes. In each patch of plants, some are male and some are...

    06/30/2016 - 18:04 Climate, Plants
  • News in Brief

    Despite volcanic setback, Antarctic ozone hole healing

    A gaping wound in Earth's atmosphere is definitively healing. Since 2000, the average size of the Antarctic ozone hole in September has shrunk by about 4.5 million square kilometers, an area larger than India, researchers report online June 30 in Science. While the hole won’t close completely until at least...

    06/30/2016 - 14:00 Climate, Pollution
  • News in Brief

    World will struggle to keep warming to 2 degrees by 2100

    The world’s current game plan to combat climate change will miss the mark. Crunching the numbers on 187 nations’ climate action proposals announced in advance of the December 2015 Paris Agreement, researchers estimate that the efforts will limit global warming to 2.6 to 3.1 degrees Celsius above preindustrial levels. That’s far above the goal agreed upon in Paris of limiting warming to well...

    06/29/2016 - 13:00 Climate, Pollution, Science & Society
  • News in Brief

    Winning helium hunt lifts hopes element not running out

    The world’s known helium reserves just ballooned. Applying gas-finding techniques from the oil industry, scientists uncovered a vast reservoir of more than a trillion liters of helium gas beneath Tanzania. That’s enough to satisfy the world’s helium needs for around seven years, the researchers announced June 28...

    06/27/2016 - 18:30 Earth, Chemistry
  • The –est

    Coral bleaching event is longest on record

    Coral reefs won’t be out of hot water anytime soon. A global bleaching event that began in June 2014 is the longest on record and now covers a larger area than ever before. What’s worse, it shows no signs of ending.

    Global warming exacerbated by the latest El Niño is to blame, National Oceanic and...

    06/22/2016 - 15:11 Oceans, Climate