Search Content

E.g., 07/29/2015
E.g., 07/29/2015
Your search has returned 134 images:
Your search has returned 354 articles:
  • News

    Sudden heat spikes did in Ice Age’s mammoth mammals

    Rapid climate change put mega-sized Ice Age mammals on the ropes before ancient humans delivered the final blow, new research indicates.

    During Earth’s last glacial period, around 12,000 to 110,000 years ago, woolly mammoths, sedan-sized armadillos and other massive mammals walked the land. Over time, these megafauna mostly died out. The instigator of these extinctions has become a topic...

    07/23/2015 - 14:27 Paleontology, Climate
  • Wild Things

    Sea level rise threatens sea turtles

    Sea levels are rising around the world, and they will continue to do so as glaciers and ice sheets melt and the world’s oceans undergo thermal expansion. How much rise will occur is still unknown — one study published online this week contends it could be as much as three...

    07/22/2015 - 16:00 Animals, Oceans, Climate
  • News

    Carbon dating may soon lead to mismatches

    The accuracy of carbon dating may soon be a thing of the past.

    Carbon emissions from burning fossil fuels threaten the method’s ability to definitively pinpoint the age of organic materials, new research suggests. The extra carbon flooding the atmosphere dilutes the relative number of radioactive carbon atoms that are vital to the dating method. By 2050, the age of fresh organic matter...

    07/20/2015 - 15:06 Climate, Chemistry
  • Science Ticker

    Blooming phytoplankton seed clouds in the Southern Ocean

    A plethora of phytoplankton kick up clouds in the Southern Ocean, researchers report July 17 in Science Advances.

    The tiny ocean critters release organic matter and sulfates, which get whipped into the air and seed cloud formation. Those clouds reflect sunlight, helping to cool the planet. Using satellite data and...

    07/17/2015 - 14:00 Oceans, Climate
  • News

    Current El Niño coming on strong

    Climate’s “little boy” is back in a big way.

    El Niño, a weather disruption caused by unusually warm seawater in the eastern Pacific, kicked off in March and could become a whopper, the National Oceanic and Atmospheric Administration’s Climate Prediction Center reported July 9. The agency...

    07/16/2015 - 11:28 Climate, Oceans
  • Science Stats

    Wildfire seasons have gotten almost 20 percent longer

    Climate change is setting the world on fire. Between 1979 and 2013, the duration of wildfire seasons increased across 25.3 percent of Earth’s vegetated surface, with net gains on every continent except Australia and Antarctica, researchers report online July 14 in Nature Communications.

    Wildfire seasons encompass...

    07/15/2015 - 11:29 Climate
  • News

    Bumblebee territory shrinking under climate change

    As climate change marches on, bumblebees are losing ground.

    Rising temperatures are quickly stamping out bumblebees from their southernmost territories in North America and Europe. Yet surprisingly, many Bombus species are holding steady on their northern borders instead of surging into cooler climes, researchers...

    07/09/2015 - 14:00 Climate, Animals
  • News

    Greenland’s out-of-sync climate explained

    Scientists think they’ve figured out why Greenland’s climate is out of sync with the rest of the Northern Hemisphere — but they had to go way back in time to find the proposed culprit.

    From the 1970s through the early 1990s, Greenland kept its cool even as the Northern Hemisphere warmed. Reconstructing and examining 2,100 years of Greenland temperatures using ice-trapped air bubbles,...

    07/08/2015 - 07:00 Climate, Oceans
  • Wild Things

    Pink salmon threatened by freshwater acidification

    As carbon dioxide levels in the atmosphere rise, the world’s oceans are absorbing some of the gas and slowly becoming more acidic. That acidification impedes the chemical reaction that many marine species use to make calcium carbonate shells and skeletons. Fish were once thought to be immune to the drop in pH, but...

    06/30/2015 - 18:00 Climate, Animals
  • News

    Fast-spreading crack threatens giant Antarctic ice shelf

    Scientists have spotted the mortal wound that could prompt the collapse of Antarctica’s fourth-largest ice shelf.

    Satellite images reveal that a crack in Larsen C rapidly extended tens of kilometers across the ice shelf in 2014. If the crack reaches the ice shelf’s edge, it could snap off a Delaware-sized area of ice, researchers...

    06/19/2015 - 15:20 Earth, Climate