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.

  • From cradle to grave: Factors that shaped evolution
    on July 19, 2018 at 6:20 pm

    This study brings us closer to knowing the complex interactions between topography and climate change, and how these factors influence the evolutionary histories and biodiversity of species in natural ecosystems. […]

  • Expected sea-level rise following Antarctic ice shelves' collapse
    on July 19, 2018 at 12:54 pm

    Scientists have shown how much sea level would rise if Larsen C and George VI, Antarctic ice shelves at risk of collapse, were to break up. While Larsen C has received much attention due to the break-away of a trillion-ton iceberg from it last summer, its collapse would contribute only a few millimeters to sea-level rise. The break-up of the smaller George VI Ice Shelf would have a much larger impact. […]

  • Atlantic circulation is not collapsing -- but as it shifts gears, warming will reaccelerate
    on July 18, 2018 at 5:11 pm

    Data suggest that the recent, rapid slowdown of the Atlantic Ocean circulation is not a sign of imminent collapse, but a shift back toward a more sluggish phase. The slowdown implies that global air temperatures will increase more quickly in the coming decades. […]

  • Scientists lack vital knowledge on rapid Arctic climate change
    on July 18, 2018 at 4:24 pm

    Arctic climate change research relies on field measurements and samples that are too scarce, and patchy at best, according to a comprehensive review study. The researchers looked at thousands of scientific studies, and found that around 30% of cited studies were clustered around only two research stations in the vast Arctic region. […]

  • Reducing carbon emissions will limit sea level rise
    on July 16, 2018 at 5:07 pm

    A new study demonstrates that a correlation also exists between cumulative carbon emissions and future sea level rise over time -- and the news isn't good. […]

  • Changes in Hudson River may offer insight into how glaciers grew
    on July 13, 2018 at 5:51 pm

    Researchers say they may be able to estimate how glaciers moved by examining how the weight of the ice sheet altered topography and led to changes in the course of the river. […]

  • 5,300-year-old Iceman's last meal reveals remarkably high-fat diet
    on July 12, 2018 at 3:46 pm

    In 1991, German tourists discovered a human body that was later determined to be the oldest naturally preserved ice mummy, known as Otzi or the Iceman. Now, researchers who have conducted the first in-depth analysis of the Iceman's stomach contents offer a rare glimpse of our ancestor's ancient dietary habits. Among other things, their findings show that the Iceman's last meal was heavy on the fat. […]

  • How ocean warmth triggers glacial melting far away
    on July 12, 2018 at 3:44 pm

    The melting of glaciers on one side of the globe can trigger disintegration of glaciers on the other side of the globe, as has been presented by scientists, who investigated marine microalgae preserved in glacial deposits and subsequently used their findings to perform climate simulations. […]

  • Mapping species range shifts under recent climatic changes
    on July 12, 2018 at 2:05 pm

    The inclusion of taxon-specific sensitivity to a shifting climate helps us understand species distributional responses to changes in climate. […]

  • Strengthening west winds close to Antarctica previously led to massive outgassing of carbon
    on July 10, 2018 at 2:16 pm

    A new explanation for the Heinrich 1 event, where temperatures over Antarctica rose 5C in less than a century, suggests strengthening westerlies around the Antarctic led to a substantial increase in atmospheric carbon. Today, human-caused climate change is causing these same westerly winds to contract towards Antarctica and strengthen, suggesting an unexpected spike in carbon dioxide could occur again. […]

  • Scientists discover the world's oldest colors
    on July 9, 2018 at 7:27 pm

    Scientists have discovered the oldest colors in the geological record, 1.1-billion-year-old bright pink pigments extracted from rocks deep beneath the Sahara desert in Africa. […]

  • Fingerprint of ancient abrupt climate change found in Arctic
    on July 9, 2018 at 3:11 pm

    A research team found the fingerprint of a massive flood of fresh water in the western Arctic, thought to be the cause of an ancient cold snap that began around 13,000 years ago. […]

  • Scientists capture breaking of glacier in Greenland
    on July 9, 2018 at 2:11 pm

    A team of scientists has captured on video a four-mile iceberg breaking away from a glacier in eastern Greenland, an event that points to one of the forces behind global sea-level rise. […]

  • First dogs in the Americas arrived from Siberia, disappeared after European contact
    on July 5, 2018 at 6:35 pm

    A new study offers an enhanced view of the origins and ultimate fate of the first dogs in the Americas. The dogs were not domesticated North American wolves, as some have speculated, but likely followed their human counterparts over a land bridge that once connected North Asia and the Americas, the study found. […]

  • What does global climate have to do with erosion rates?
    on July 5, 2018 at 3:40 pm

    Geoscientists have been intrigued by a potential link between erosion rates at the Earth's surface and changes in global climate. A new study now calls into question this link. A team of researchers re-examined 30 locations with reported accelerated erosion after the onset of glacial-interglacial cycles a few million years ago. In nearly all of the locations, the proposed link between erosion and global climate could not be confirmed. […]

  • Tiny fine particles of global impact -- radiocarbon reveals the origin of black carbon
    on July 5, 2018 at 3:00 pm

    A technical breakthrough was achieved in the source determination of very small carbon samples at the Accelerator Laboratory and the Laboratory of Chronology of the University of Helsinki. The development work is essential in climate research as it facilitates disentangling the origin of, for instance, black carbon particles. […]

  • Global warming may be twice what climate models predict
    on July 5, 2018 at 3:00 pm

    Future global warming may eventually be twice as warm as projected by climate models under business-as-usual scenarios and even if the world meets the 2°C target sea levels may rise six meters or more, according to an international team of researchers from 17 countries. […]

  • Oxygen loss in the coastal Baltic Sea is 'unprecedentedly severe'
    on July 5, 2018 at 12:42 pm

    The Baltic Sea is home to some of the world's largest dead zones, areas of oxygen-starved waters where most marine animals can't survive. But while parts of this sea have long suffered from low oxygen levels, a new study shows that oxygen loss in coastal areas over the past century is unprecedented in the last 1,500 years. […]

  • New study questions when the brown bear became extinct in Britain
    on July 4, 2018 at 3:20 pm

    New research provides insights into the extinction of Britain's largest native carnivore. The study is the first of its kind to collate and evaluate the evidence for the brown bear in post-Ice Age Britain. […]

  • Rising sea levels could cost the world $14 trillion a year by 2100
    on July 3, 2018 at 11:07 pm

    Failure to meet the United Nations' 2ºC warming limits will lead to sea level rise and dire global economic consequences, new research has warned. A study found flooding from rising sea levels could cost $14 trillion worldwide annually by 2100, if the target of holding global temperatures below 2ºC above pre-industrial levels is missed. […]

  • Marine mammals most at risk from increased Arctic ship traffic
    on July 2, 2018 at 5:38 pm

    The first comprehensive survey of Arctic marine mammal populations' vulnerability to shipping along two main routes finds which face the most risks from heavier traffic in the region. […]

  • Greenhouse gases were the main driver of climate change in the deep past
    on July 2, 2018 at 3:12 pm

    Greenhouse gases were the main driver of climate throughout the warmest period of the past 66 million years, providing insight into the drivers behind long-term climate change. […]

  • Climate change is making night-shining clouds more visible
    on July 2, 2018 at 3:11 pm

    Increased water vapor in Earth's atmosphere due to human activities is making shimmering high-altitude clouds more visible, a new study finds. The results suggest these strange but increasingly common clouds seen only on summer nights are an indicator of human-caused climate change, according to new research. […]

  • What caused the mass extinction of Earth's first animals?
    on June 27, 2018 at 8:05 pm

    Fossil records tell us that the first macroscopic animals appeared on Earth about 575 million years ago. Twenty-four million years later, the diversity of animals began to mysteriously decline, leading to Earth's first know mass extinction event. A research team is helping to unravel this mystery and understand why this extinction event happened, what it can tell us about our origins, and how the world as we know it came to be. […]

  • New study explains Antarctica's coldest temperatures
    on June 25, 2018 at 11:26 pm

    Tiny valleys near the top of Antarctica's ice sheet reach temperatures of nearly -100 degrees Celsius, according to a new study. The finding could change scientists' understanding of just how low temperatures can get at Earth's surface, and how it happens, according to the researchers. […]

  • Antarctic ice sheet is melting, but rising bedrock below could slow it down
    on June 21, 2018 at 6:11 pm

    An international team of researchers has found that the bedrock below the remote West Antarctic Ice Sheet is rising much more rapidly than previously thought, in response to ongoing ice melt. […]

  • Clovis site: Montana burial site answers questions about early humans
    on June 19, 2018 at 4:24 pm

    Scientists have shown that at the Anzick site in Montana - the only known Clovis burial site - the skeletal remains of a young child and the antler and stone artifacts found there were buried at the same time, raising new questions about the early inhabitants of North America. […]

  • New model for gauging ice sheet movement may improve sea-level-rise predictions
    on June 19, 2018 at 4:24 pm

    Researchers discovered friction -- or 'basal drag' -- between ice sheets and the hard bed underneath has no influence on how fast glaciers flow. […]

  • Land-based portion of massive East Antarctic ice sheet retreated little during past eight million...
    on June 15, 2018 at 7:44 pm

    Large parts of the massive East Antarctic Ice Sheet did not retreat significantly during a time when atmospheric carbon dioxide concentrations were similar to today's levels. […]

  • Why the tongue of the Pine Island Glacier suddenly shrank
    on June 15, 2018 at 1:48 pm

    The Pine Island Glacier in Western Antarctica is not only one of the fastest-flowing ice streams in the Southern Hemisphere; over the past 11 years, four major icebergs have calved from its floating tongue. […]