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E.g., 09/29/2016
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  • News

    Glass bits, charcoal hint at 56-million-year-old space rock impact

    DENVER — A period of skyrocketing global temperatures started with a bang, new research suggests.

    Impact debris and evidence of widespread wildfires around eastern North America suggest that a large space rock whacked Earth around 56 million years ago at the beginning of the Paleocene-Eocene Thermal Maximum, also known as the PETM, a period of rapid warming and huge increases in carbon...

    09/28/2016 - 17:31 Earth, Climate
  • News

    Concern expands over Zika birth defects

    After a year caring for patients at the heart of Brazil’s Zika epidemic, pediatric neurologist Vanessa van der Linden has seem some of the worst cases.

    She was one of the first researchers to link Zika virus to microcephaly, a now a well-known birth defect marked by a small, misshapen head and, sometimes, a forehead that slopes backward. Babies with the defect can have other symptoms,...

    09/28/2016 - 16:39 Health
  • News

    Ancient microbe fossils show earliest evidence of shell making

    DENVER — Life on Earth got into the shell game more than 200 million years earlier than previously thought.

    Fossilized eukaryotes — complex life-forms that include animals and plants — discovered in Canada are decked out in armorlike layers of mineral plates, paleobiologist Phoebe Cohen said September 27 at the Geological Society of America’s annual meeting. At about 809 million years...

    09/28/2016 - 14:37 Paleontology, Evolution, Microbes
  • Science Ticker

    Solar system sits within a major spiral arm of the Milky Way

    Our local galactic neighborhood might be more expansive than previously thought. Rather than being stuck in some backwater galactic community, our solar system lives along a major spiral arm of the Milky Way, researchers report online September 28 in Science Advances.

    Astronomers suspected that our arm of the Milky Way — the Orion Arm — was just a bridge connecting two bands of stars and...

    09/28/2016 - 14:00 Astronomy
  • News

    New case emerging for Culex mosquito as unexpected Zika spreader

    ORLANDO, Fla. — New evidence from separate labs supports the controversial idea that an overlooked and unexpected Culex mosquito might spread Zika virus.

    The southern house mosquito, Culex quinquefasciatus, is common in the Americas. Constância Ayres, working with Brazil’s Oswaldo Cruz Foundation in Recife, previously surprised Zika researchers with the disturbing proposal that this...

    09/28/2016 - 11:49 Animals, Biomedicine
  • Science Ticker

    First ‘three-parent baby’ born from nuclear transfer

    A baby boy born on April 6 is the first person to be born from a technique used to cure mitochondrial diseases, New Scientist reports.

    The child’s mother carries Leigh syndrome, a fatal disease caused by faulty mitochondria. Mitochondria generate most of a cell’s energy and perform other functions that keep cells healthy. Each mitochondria has a circle of DNA containing 37 genes needed...

    09/27/2016 - 18:14 Genetics, Cells, Science & Society
  • Science Ticker

    Measles has been eliminated in the Americas, WHO says

    A half-century after scientists first introduced a vaccine to combat measles, the disease has been eliminated from a swath of the globe stretching from Canada to Chile — and all the countries in between.

    The region is the first in the world to have eliminated the viral disease, the Pan American Health Organization and World Health Organization announced September 27. That’s different...

    09/27/2016 - 15:11 Health
  • News in Brief

    Barnacles track whale migration

    DENVER — Barnacles can tell a whale of a tale. Chemical clues inside barnacles that hitched rides on baleen whales millions of years ago could divulge ancient whale migration routes, new research suggests.

    Modern baleen whales migrate thousands of kilometers annually between breeding and feeding grounds, but almost nothing is known about how these epic journeys have changed over time....

    09/27/2016 - 12:01 Animals, Paleontology, Oceans
  • For Daily Use

    Wi-Fi can help house distinguish between members

    In smart homes of the future, computers may identify inhabitants and cater to their needs using a tool already at hand: Wi-Fi. Human bodies partially block the radio waves that carry the wireless signal between router and computer. Differences in shape, size and even gait among household members yield different patterns in the received Wi-Fi signals. A computer can analyze the signals to...

    09/27/2016 - 06:00 Technology
  • News in Brief

    Europa spouting off again

    Jupiter’s moon Europa might once again be venting water into space, further supporting the idea that an ocean hides beneath its thick shell of ice, researchers reported September 26 at a news conference. 

    Plumes erupting from the moon’s surface, silhouetted against background light from Jupiter, appear in several images taken by the Hubble Space Telescope in early 2014. The geysers —...

    09/26/2016 - 17:18 Planetary Science