A new study finds evidence that the last time Earth was as warm as it is today, cold freshwater from a melting Greenland ice sheet circulated in the Atlantic Ocean as far south as Bermuda, elevating sea levels and altering the ocean’s climate and ecosystems. The research shows a large pulse of cold freshwater covered the North Atlantic for a brief period of time about 125,000 years ago.
The North Atlantic Ocean played a key role in the last great tipping point in Earth’s climate system, pioneering new research has shown.
Scientists have long been concerned that global warming may push Earth’s climate system across a “tipping point,” where rapid melting of ice and further warming may become irreversible — a hotly debated scenario with an unclear picture of what this point of no return may look like.
New research in the journal Nature’s Scientific Reports has provided a major new theory on the cause of the ice age that covered large parts of the Northern Hemisphere 2.6 million years ago.
For decades, climate scientists have tried to explain why ice-age cycles became longer and more intense about 900,000 years ago, switching from 41,000-year cycles to 100,000-year cycles.
The paleoclimate record for the last ice age — a time 21,000 years ago called the “Last Glacial Maximum” (LGM) — tells of a cold Earth whose northern continents were covered by vast ice sheets.
A team of scientists has successfully identified the age of 120,000-year-old Antarctic ice using radiometric krypton dating — a new technique that may allow them to locate and date ice that is more than a million years old.
An international team of scientists has discovered new relationships between deep-sea temperature and ice-volume changes to provide crucial new information about how the ice ages came about.
At the end of the last Ice Age, as the world began to warm, a swath of the North Pacific Ocean came to life.
Icelandic glacier on display at New York City’s Museum of Modern Art.
A vast pool of warm water stretches along the equator from Africa to the western Pacific Ocean.
Ancient DNA shows that bowhead whales bucked the trend to survive the last Ice Age, say scientists.