Ice Ages

Ice Ages News -- ScienceDaily Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.

  • Tipping points are real: Gradual changes in CO2 levels can induce abrupt climate changes
    on June 23, 2017 at 2:04 pm

    During the last glacial period, within only a few decades the influence of atmospheric CO2 on the North Atlantic circulation resulted in temperature increases of up to 10 degrees Celsius in Greenland -- as indicated by new climate calculations. […]

  • Accelerating rate of temperature rise in the Pyrenees
    on June 21, 2017 at 2:31 pm

    The Iberian Peninsula is undergoing climate change, with temperatures on the rise, and mountain ranges are not exempt from this trend. A team of scientists has analyzed regional climate series from the Central Pyrenees for 1910 to 2013 (the most extensive climate records to date for the area), concluding that temperatures have risen at an increasing rate since 1970, particularly in spring and summer. […]

  • Ocean predicts future northwestern European and Arctic climate
    on June 21, 2017 at 2:01 pm

    There is a clear potential for practical and useful predictions of northwestern European and Arctic climate based on the state of the ocean, new research indicates. […]

  • Great opportunities for marine research with new underwater vehicle
    on June 20, 2017 at 1:45 pm

    An autonomous underwater vehicle offers promise for advanced marine research use. This will make it possible to conduct detailed studies of the seabed at great depths and track the climate thousands of years back in time, say researchers. […]

  • Wet and stormy weather lashed California coast... 8,200 years ago
    on June 20, 2017 at 1:32 pm

    An analysis of stalagmite records from White Moon Cave in the Santa Cruz Mountains shows that 8200 years ago the California coast underwent 150 years of exceptionally wet and stormy weather. This is the first high resolution record of how the Holocene cold snap affected the California climate. […]

  • Scientists throw light on mysterious ice age temperature jumps
    on June 19, 2017 at 4:58 pm

    Scientists believe they have discovered the reason behind mysterious changes to the climate that saw temperatures fluctuate by up to 15°C within just a few decades during the ice age periods. […]

  • Widespread snowmelt in West Antarctica during unusually warm summer
    on June 15, 2017 at 12:46 pm

    An area of West Antarctica more than twice the size of California partially melted in 2016 when warm winds forced by an especially strong El Nino blew over the continent. […]

  • Animal evolution: Hot start, followed by cold shock
    on June 15, 2017 at 12:45 pm

    The initial phases of animal evolution proceeded faster than hitherto supposed: New analyses suggest that the first animal phyla emerged in rapid succession -- prior to the global Ice Age that set in around 700 million years ago. […]

  • Ancient otter tooth found in Mexico suggests mammals migrated across America
    on June 14, 2017 at 1:29 pm

    An ancient otter tooth recently discovered in Mexico suggests certain mammals migrated across America during the Miocene geologic epoch, roughly 23 million to 5.3 million years ago. The new hypothesized route questions other theories such as migrations above Canada and through Panama, and has implications for a much larger biologic event -- the Great American Biotic Interchange, when land bridges were formed and animals dispersed to and from North America and South America. […]

  • Polar bears' declining mercury levels likely due to climate-related shifts
    on June 14, 2017 at 1:18 pm

    To understand how human activities are affecting the planet, scientists often study the health of animals in the wild. Now a new study finds that the levels of mercury in some polar bears are declining. But rather than heralding a drop in mercury in the environment, the decrease could indicate how climate change has led the animals to shift foraging habits, which has affected their diets and weight. […]

  • Large Canadian Arctic climate change study cancelled due to climate change
    on June 13, 2017 at 7:06 pm

    The Science Team of the Canadian Research Icebreaker CCGS Amundsen has cancelled the first leg of the 2017 Expedition due to complications associated with the southward motion of hazardous Arctic sea ice, caused by climate change. […]

  • Comets may have delivered significant portions of Earth's xenon
    on June 8, 2017 at 6:55 pm

    A new study suggests that roughly 22% of the element xenon found in Earth's atmosphere may have come from comets. […]

  • Sahara greening may intensify tropical cyclone activity worldwide
    on June 8, 2017 at 11:33 am

    Future climate warming could lead to a re-greening of the southernmost Sahara (Sahel), with decreased dust emissions and changes in land cover. In a recent study, researchers have found that tropical cyclone activity may have increased during past warm climates in connection with a greening of the Sahara. […]

  • Finding new homes won't help emperor penguins cope with climate change
    on June 7, 2017 at 7:12 pm

    Unlike other species that migrate successfully to escape the wrath of climate change, a new study shows that dispersal may help sustain global Emperor penguin populations for a limited time, but, as sea ice conditions continue to deteriorate, the 54 colonies that exist today will face devastating declines by the end of this century. […]

  • Domes of frozen methane may be warning signs for new blow-outs
    on June 5, 2017 at 7:19 pm

    Several methane domes, some 500m wide, have been mapped on the Arctic Ocean floor. They may be signs of soon-to-happen methane expulsions that have previously created massive craters in a near-by area. […]

  • Antarctic ice rift close to calving, after growing 17km in 6 days, latest data from ice shelf shows
    on June 2, 2017 at 3:28 pm

    The rift in the Larsen C ice shelf in Antarctica has grown by 17km in the last few days and is now only 13km from the ice front, indicating that calving of an iceberg is probably very close, researchers revealed after studying satellite data. The rift is likely to lead to one of the largest icebergs ever recorded. […]

  • Massive craters formed by methane blow-outs from the Arctic sea floor
    on June 1, 2017 at 7:18 pm

    Hundreds of massive, kilometer-wide craters on the ocean floor in the Arctic were formed by substantial methane expulsions, new research explains. […]

  • Geoscientific evidence for subglacial lakes
    on June 1, 2017 at 12:22 pm

    During the last glacial period -- when the ice in the Antarctic was far thicker and extended further offshore than it does today -- it has been speculated that subglacial lakes existed beneath it. An international team of researchers has now successfully sampled the meter-thick sediment layers left behind by these lakes contemporary on the seafloor. […]

  • Human activity has polluted European air for 2,000 years
    on May 31, 2017 at 2:33 pm

    A new study combining European ice core data and historical records of the infamous Black Death pandemic of 1349-1353 shows metal mining and smelting have polluted the environment for thousands of years, challenging the widespread belief that environmental pollution began with the Industrial Revolution in the 1700s and 1800s. […]

  • Previously, on Arctic warming
    on May 30, 2017 at 6:48 pm

    Arctic warming occurred in the early 20th century due to the warming phases -- 'interdecadal variability mode' -- of both the Pacific and Atlantic oceans, suggests new research. […]

  • Death by volcano?
    on May 30, 2017 at 12:23 pm

    The discovery of anomalously high levels of mercury in rocks from the Ordivician geological period has led to a new interpretation of the ensuing mass extinction. A sequence of disturbances may have led to catastrophic cooling by reflective sulfate aerosols injected into the atmosphere by massive volcanism. The finding is important since aerosol cooling is under consideration as a way to temper global warming. […]

  • 'Tiny clocks' crystallize understanding of meteorite crashes
    on May 26, 2017 at 6:37 pm

    Scientists are using new imaging techniques to measure the atomic nanostructure of ancient crystal fragments at meteorite impact sites. The end goal? To understand when impacts ended and life began. […]

  • Fossil beetles suggest that LA climate has been relatively stable for 50,000 years
    on May 24, 2017 at 5:11 pm

    Research based on more than 180 fossil insects preserved in the La Brea Tar Pits of Los Angeles indicate that the climate in what is now southern California has been relatively stable over the past 50,000 years. […]

  • Weathering of rocks a poor regulator of global temperatures
    on May 23, 2017 at 12:20 pm

    Evidence from the age of the dinosaurs to today shows that chemical weathering of rocks is less sensitive to global temperature, and may depend on the steepness of the surface. The results call into question the role of rocks in setting our planet's temperature over millions of years. […]

  • Antarctic has seen widespread change in last 50 years, moss study reveals
    on May 18, 2017 at 6:03 pm

    In 2013, researchers studying mosses and microbes growing at the southern end of the Antarctic Peninsula documented unprecedented ecological change over the last 50 years, driven by warming temperatures. Now, the same research group has confirmed that those striking changes in the Antarctic are widespread, occurring all across the Peninsula. […]

  • A recipe for concrete that can withstand road salt deterioration
    on May 18, 2017 at 2:41 pm

    Engineers have known for some time that calcium chloride salt, commonly used as deicer, reacts with the calcium hydroxide in concrete to form a chemical byproduct that causes roadways to crumble. A civil engineer is working on a new recipe for concrete, using cast-off products from furnaces, that can hold its own against the forces of chemical erosion. […]

  • Earth's atmosphere more chemically reactive in cold climates
    on May 17, 2017 at 5:26 pm

    A Greenland ice core providing a first glimpse at the history of reactive oxidants shows that for big temperature swings in the past 100,000 years, reactive oxidants are actually higher in cold climates. This means that new mechanisms -- not just water vapor, plant and soil emissions -- must affect the concentration of ozone and other oxidants in the atmosphere. […]

  • Porewater salinity: Key to reconstructing 250,000 years of Lake Van’s history
    on May 16, 2017 at 1:11 pm

    The sediments of Lake Van in Eastern Anatolia (Turkey) are a valuable climate archive. Now, using the salinity measured in sediment porewater, scientists have reconstructed the huge lake-level fluctuations that occurred over the past 250,000 years. This approach – based on simple physical concepts – is likely to be more widely applied in the future. […]

  • NASA's EPIC view spots flashes on Earth
    on May 15, 2017 at 5:30 pm

    One million miles from Earth, a NASA camera is capturing unexpected flashes of light reflecting off our planet. […]

  • Saying goodbye to glaciers
    on May 11, 2017 at 6:19 pm

    Glaciers around the world are disappearing before our eyes, and the implications for people are wide-ranging and troubling, a glacier expert concludes in a new study. […]