Researchers combine observations of ancient shorelines and properties of Earth’s crust to infer the size of the Laurentide Ice Sheet during the last glacial cycle.
paleoclimatology & paleoceanography
Posted inNews
Megadrought Helped Topple the Assyrian Empire
Paleoclimate records shed light on the ancient civilization’s meteoric rise and catastrophic collapse.
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What Lies Beneath Is Important for Ice Sheets
New research reconstructing the topography of Antarctica shows that the continent has 25% less land above sea level than when ice first started to accumulate 34 million years ago.
Posted inResearch Spotlights
Reconstructing 150 Million Years of Arctic Ocean Climate
A new summary of past Arctic climate conditions gives insight into anthropogenic influences on today’s climate and on the need for future drilling studies to further improve our understanding of the past.
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Antarctic Ice Cores Offer a Whiff of Earth’s Ancient Atmosphere
Bubbles of greenhouse gases trapped in ice shed new light on an important climate transition that occurred about a million years ago.
Posted inFeatures
Three Times Tectonics Changed the Climate
Fifty years after the birth of modern plate tectonics theory, a group of researchers highlights three key examples of how our planet’s shape-shifting outer layer has altered our climate.
Posted inResearch Spotlights
Oceans Vented Carbon Dioxide During the Last Deglaciation
A new boron isotope record from South Pacific marine sediments offers a more complete picture of ocean-atmosphere carbon dioxide exchange during the late Pleistocene.
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Dusting Off the Arid Antiquity of the Sahara
New research on the geochemistry of Canary Islands paleosols shows that the Sahara has been an arid dust producer for at least 4.8 million years.
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Gravel Gives Clues to the Strength of Paleotsunamis
The roundness of sediment deposits may shed light on how big tsunamis were in the past and how to evaluate hazards in the future.
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600 Years of Grape Harvests Document 20th Century Climate Change
A 664-year record of grape harvest dates from Burgundy, France, reveals significantly warmer temperatures since 1988.