Climate Change

Source of Snowball Earth solved

Geologists have solved the source of Snowball Earth, a period when the planet’s environment was an extreme "icehouse".

US Navy ships from WWII provide new climate evidence

Researchers have recovered the logbooks from US Navy ships stationed at Pearl Harbour, providing new evidence for understanding how the global climate is changing.

Extreme cooling caused extinction of early humans in Europe

Study led by the University College London (UCL) suggests that an extreme cooling period approximately 1.1 million years ago likely contributed to the extinction of early human populations in Europe.

Chimú Culture constructed 10 km wall to protect capital against El Niño events

Archaeologists conducting a study of the Muralla La Cumbre, a 10 km wall in northern Peru, have concluded that the Chimú Culture constructed the wall to protect the capital of Chan Chan against El Niño events.

Arid regions of South Africa were once home to ancient lakes

Recently discovered evidence supporting the existence of ancient lakes in remarkably dry areas of South Africa indicates that Stone Age humans may have inhabited a more extensive range across the continent than initially believed.

New ice age knowledge

An international team of researchers headed by scientists from the Alfred Wegener Institute has gained new insights into the carbon dioxide exchange between ocean and atmosphere, thus making a significant contribution to solving one of the great scientific mysteries of the ice ages.

Early Earth’s air weighed less than half of today’s atmosphere

The idea that the young Earth had a thicker atmosphere turns out to be wrong. New research from the University of Washington uses bubbles trapped in 2.7 billion-year-old rocks to show that air at that time exerted at most half the pressure of today's atmosphere.

Climate-exodus expected in the Middle East and North Africa

Part of the Middle East and North Africa may become uninhabitable due to climate change

Six to 10 million years ago: Ice-free summers at the North Pole

An international team of scientists led by the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) have managed to open a new window into the climate history of the Arctic Ocean. Using unique sediment samples from the Lomonosov Ridge, the researchers found that six to ten million years ago the central Arctic was completely ice-free during summer and sea-surface temperature reached values of 4 to 9 degrees Celsius.

North Atlantic played pivotal role in last great climate tipping point

North Atlantic played pivotal role in last great climate tipping point, research shows.

Ice Age Antarctic Ocean gives clue to ‘missing’ atmospheric carbon dioxide

Climate is not constant on Earth. Consider ice ages coming and going as an example. Parallel to ice age cycles, atmospheric carbon dioxide reduces during glacial periods and increases during warmer times, although modern fossil fuel-related carbon dioxide emission broke this natural cyclicity. With the proper proxy measurements, scientists can look into these past cycles to determine how exactly climate systems were naturally governed.

Increase in volcanic eruptions at the end of the ice age caused by melting ice caps and glacial erosion

The combination of erosion and melting ice caps led to a massive increase in volcanic activity at the end of the last ice age, according to new research.

Fossil fuel emissions could soon make it impossible for radiocarbon dating artefacts that are hundreds of years old

Carbon released by burning fossil fuels is diluting radioactive carbon-14 and artificially raising the radiocarbon 'age' of the atmosphere.

UA scientists find evidence of Roman period megadrought

A multi-decade drought that occurred in the 2nd century has been revealed by researchers from the University of Arizona by studying tree-rings (dendrochronology).

Unravelling causes of Ice Age extinctions

What caused the extinction of Ice Age megafauna? Was climate change responsible or human activity that caused the woolly mammoth and woolly rhinoceros to go extinct?

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