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Pulling Back the Sheets
Topic: Climate
A new study shows that melting ice sheets in Greenland and Antarctica are contributing more to rising sea levels than other sources, such as mountain glaciers and ice caps. Studying these sheets is important, because if they collapse they could dramatically change the level of the oceans globally.

Ancient Hyperthermals
Topic: Climate
Intense global warming may have occurred more frequently in Earth's past than previously believed. New research shows that release of carbon dioxide from the deep oceans could have triggered these ancient 'hyperthermal' events.

Wet and Dry
Topic: Climate
From extreme precipitation events to catastrophic droughts, the effects of climate change may be heralding in a new era of extreme weather. Scientists are trying to determine what the repercussions for the Earth's biosphere could be.

Zombie Invaders
Topic: Climate
The ability of organisms to adapt to our changing climate could cause profound changes to the biosphere. Some microbes might remain dormant in environments until conditions improve. Invasive species could move into new environments, potentially triggering a mass extinction.

How Severe Can the Climate Get?
Topic: Climate
New research shows that modern climate change could become worse than anything known in written history. Could we be facing megadroughts in the future?

Spotlight on Local Change
Topic: Climate
Astrobiology Magazine's climate blog, The Hot Zone, is focusing on the local effects of climate change in different places in the world. Changing climate trends are resulting in less snow in California's Sierra Nevada mountains and more heavy rain for the state of Queensland in Australia.

Arctic Changes and an Ancient Extinction
Topic: Climate
Scientists are studying an exceptional episode of ancient global warming that occurred around 56 million years ago. During the Paleocene-Eocene Thermal Maximum, global sea surface temperatures increased by about 5°C. Studying this period could help scientists understand how modern climate change could effect life on Earth.

The Human Goldilocks Zone
Topic: Climate
Scientists have discovered that thousands of people lived on a treacherous chain of islands in the Pacific Ring of Fire as far back as at least 6000 B.C. The study is teaching scientists about the adaptability of humans, and could teach us about how our changing climate might affect our chances for survival in the future.

Earth's Hot Past a Glimpse Into the Future?
Topic: Climate
A new study indicates that temperatures may rise more than projected if society keeps emitting greenhouse gasses. The study is based on data concerning climate change during Earth's deep past.

Climate Change to the Core
Topic: Climate
Researchers have reached a milestone depth of 3,331 meters while drilling in the West Antarctic Ice Sheet Divide. Drilling into the ice will allow scientists to investigate 100,000 years of Earth climate history.

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