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.

  • Blinded by the light: Climate change, the sun, and Lake Superior
    on April 24, 2018 at 8:02 pm

    Lakes tend to emit carbon dioxide (CO2) to the atmosphere, making them important players in the planet's natural regulation of its climate. However, the direction of the flow of CO2 between lakes and the atmosphere can be influenced by humans or by natural factors such as rainfall or air temperature. […]

  • Record concentration of microplastic in Arctic sea ice
    on April 24, 2018 at 3:29 pm

    Experts have recently found higher amounts of microplastic in arctic sea ice than ever before. However, the majority of particles were microscopically small. […]

  • Did last ice age affect breastfeeding in Native Americans?
    on April 23, 2018 at 7:50 pm

    Biologists have been puzzled by the evolutionary adaptation behind a common tooth trait of northern Asians and Native Americans: shovel-shaped incisors. An analysis of archeological specimens shows that nearly 100 percent of early Native Americans had shoveled incisors, and genetic evidence pinpoints the selection to the Beringian standstill 20,000 years ago. One researcher proposes that a trait linked to shoveling, mammary duct growth, was selected to provide vitamin D and fat to infants. […]

  • Study reveals new Antarctic process contributing to sea level rise and climate change
    on April 18, 2018 at 6:15 pm

    A new study has revealed a previously undocumented process where melting glacial ice sheets change the ocean in a way that further accelerates the rate of ice melt and sea level rise. The research found that glacial meltwater makes the ocean's surface layer less salty and more buoyant, preventing deep mixing in winter and allowing warm water at depth to retain its heat and further melt glaciers from below. […]

  • Warming planet led to peatland formation
    on April 16, 2018 at 7:56 pm

    Rising temperatures were a key driver of peatland formation after the last glacial maximum, according to new research. […]

  • Virtual contact lenses for radar satellites
    on April 16, 2018 at 2:58 pm

    Radar satellites supply the data used to map sea level and ocean currents. However, up until now the radar's 'eyes' have been blind where the oceans are covered by ice. Researchers have now developed a new analysis method to solve this problem. […]

  • Scientists discover first super salty subglacial lakes in Canadian Arctic
    on April 11, 2018 at 9:41 pm

    An analysis of radar data led scientists to an unexpected discovery of two lakes located beneath 550 to 750 meters of ice underneath the Devon Ice Cap, one of the largest ice caps in the Canadian Arctic. They are thought to be the first isolated hypersaline subglacial lakes in the world. […]

  • Atlantic Ocean Circulation at weakest point in 1,600 years
    on April 11, 2018 at 5:16 pm

    New research provides evidence that a key cog in the global ocean circulation system hasn't been running at peak strength since the mid-1800s and is currently at its weakest point in the past 1,600 years. If the system continues to weaken, it could disrupt weather patterns from the United States and Europe to the African Sahel, and cause more rapid increase in sea level on the US East Coast. […]

  • Snowfall patterns may provide clues to Greenland Ice Sheet
    on April 11, 2018 at 5:16 pm

    A new study describes a unique method involving cloud characteristics for measuring snowfall that could help answer some big questions about the Greenland Ice Sheet. […]

  • North-exposed ice cliffs accelerate glacier melt
    on April 11, 2018 at 3:10 pm

    Researchers have confirmed the suspicion that north-facing ice cliffs on debris-covered glaciers in the Himalayas accelerate ice melt. […]

  • Melting of Arctic mountain glaciers unprecedented in the past 400 years
    on April 10, 2018 at 5:28 pm

    Glaciers in Alaska's Denali National Park are melting faster than at any time in the past four centuries because of rising summer temperatures, a new study finds. […]

  • Burning ice in oceanic clay rich sediment
    on April 9, 2018 at 2:38 pm

    A research team has identified the formation of natural gas hydrates, so-called flammable ice, formed in oceans. […]

  • 1C rise in atmospheric temperature causes rapid changes to world's largest High Arctic lake
    on April 6, 2018 at 7:54 pm

    An interdisciplinary team of scientists examining everything from glaciology to freshwater ecology discovered drastic changes over the past decade to the world's largest High Arctic lake. And from glacial melt to the declining lake ice to changes in lake ecology, the results from Lake Hazen on Ellesmere Island in Canada are alarming. […]

  • The ban of the cave bear
    on April 5, 2018 at 2:01 pm

    At 3.5 meters long and with a shoulder height of 1.7 meters, the cave bear was one of the giants of the Ice Age. Yet few appear to have survived until the last glacial maximum 24,000 to 19,000 years ago. Researchers have conducted analyses to find out what likely caused the extinction of these large herbivores. It is believed that the renewed cooling of the climate and hunting by humans -- added to the bears purely vegetarian diet -- increased the pressure on this megafauna species. […]

  • Climate change and recreational activities at Walden Pond have altered its ecosystem
    on April 4, 2018 at 6:34 pm

    Climate change and recreational activity at Walden Pond may have altered the ecology of this iconic lake during the past 1,800 years, affecting the water quality and plankton community, according to a new study. […]

  • Algae, impurities darken Greenland ice sheet and intensify melting
    on April 4, 2018 at 3:47 pm

    The Dark Zone of the Greenland ice sheet has major impact on the surface melt of this immense store of ice. A new study -- based on drone surveys -- suggests that ice algae, dust and soot from wildfires and combustion are the main cause. […]

  • Bowhead whales, the 'jazz musicians' of the Arctic, sing many different songs
    on April 4, 2018 at 1:39 pm

    Four winters of audio recordings of bowhead whales singing under the ice off Greenland show a surprise variety in this animal's repertoire. Bowhead whales' vocalization patterns are very different from the only other whale known to make distinct songs, the humpback. […]

  • Connection of sea level and groundwater missing link in climate response
    on April 3, 2018 at 4:00 pm

    About 250 million years ago, when the Earth had no ice caps and the water around the equator was too hot for reptiles, sea level still rose and fell over time. Now, an international team of researchers has developed a way to track sea-level rise and fall and to tease out what caused the changes in the absence of ice sheets. […]

  • Great magma erup­tions had two sources
    on April 3, 2018 at 12:58 pm

    New research may explain controversies related to great magma eruptions. […]

  • Earth's stable temperature past suggests other planets could also sustain life
    on April 2, 2018 at 11:26 pm

    Research about temperatures on the early Earth have ranged from a virtually ice-covered surface to a very hot planet that could not support most of today's lifeforms. New computer simulations show fairly moderate average temperatures and more stable ocean pH -- which helps explain how life evolved here, and might emerge on other planets. […]

  • Antarctica retreating across the sea floor
    on April 2, 2018 at 4:36 pm

    Antarctica's great ice sheet is losing ground as it is eroded by warm ocean water circulating beneath its floating edge, a new study has found.  &nbs […]

  • Ice-free Arctic summers could hinge on small climate warming range
    on April 2, 2018 at 3:07 pm

    A range of less than one degree Fahrenheit (or half a degree Celsius) of climate warming over the next century could make all the difference when it comes to the probability of future ice-free summers in the Arctic, new research shows. […]

  • NASA visualizes the dance of a melting snowflake
    on March 29, 2018 at 5:31 pm

    NASA has produced the first three-dimensional numerical model of melting snowflakes in the atmosphere. The model provides a better understanding of how snow melts can help scientists recognize the signature in radar signals of heavier, wetter snow -- the kind that breaks power lines and tree limbs -- and could be a step toward improving predictions of this hazard. […]

  • Fossils highlight Canada-Russia connection 53 million years ago
    on March 29, 2018 at 1:54 pm

    A new 53 million-year-old insect fossil called a scorpionfly discovered at B.C.'s McAbee fossil bed site bears a striking resemblance to fossils of the same age from Pacific-coastal Russia, giving further evidence of an ancient Canada-Russia connection. […]

  • 13,000-year-old human footprints found off Canada's Pacific coast
    on March 28, 2018 at 6:33 pm

    Human footprints found off Canada's Pacific coast may be 13,000 years old, according to a new study. The finding adds to the growing body of evidence supporting the hypothesis that humans used a coastal route to move from Asia to North America during the last ice age. […]

  • West Greenland Ice Sheet melting at the fastest rate in centuries
    on March 28, 2018 at 6:33 pm

    New study from the West Greenland Ice Sheet shows that weather patterns and summer warming combine to drive ice loss that is at the highest levels in at least 450 years. […]

  • Prehistoric people resilient in the face of extreme climate events
    on March 27, 2018 at 3:17 pm

    Pioneering early people who lived at the end of the last ice age actually carried on with life as usual despite plummeting temperatures, a study at a world-famous archaeological site in North Yorkshire suggests. […]

  • Alberta's boreal forest could be dramatically altered by 2100 due to climate change
    on March 26, 2018 at 3:01 pm

    Half of Alberta's upland boreal forest is likely to disappear over the next century due to climate change, a new study shows. The upland forest will be replaced after wildfire by open woodland or grassland, according to research from biologists. […]

  • Arctic wintertime sea ice extent is among lowest on record
    on March 23, 2018 at 6:13 pm

    Sea ice in the Arctic grew to its annual maximum extent last week, and joined 2015, 2016 and 2017 as the four lowest maximum extents on record, according to scientists. […]

  • Germany was covered by glaciers 450,000 years ago
    on March 23, 2018 at 2:48 pm

    Researchers have obtained new chronological data for the timing of the Elsterian and Saalian glacial cycles in central Germany. They found that the first Quaternary glaciation, which covered huge parts of Europe in ice, occurred as early as 450,000 years ago and not - as previously thought - around 350,000 years ago. The researcher further showed that once these glaciers had retreated, the first people appeared in central Germany around 400,000 years ago. […]