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Cretaceous Climate Tied to Ocean Circulation
Topic: Geology
Summary: New research indicates that temperatures in the Atlantic Ocean during the greenhouse climate of the Late Cretaceous were influenced by circulation in the deep ocean. The study could help astrobiologists understand how modern climate change could affect the future of our planet.

Evidence for an Iron-Rich Early Ocean
Topic: Geology
Summary: A new study reveals that the ancient deep ocean was devoid of oxygen and rich in iron. The finding requires scientists to rethink models for how life-essential nutrients were distributed in the oceans.

Carbon's Deep Mysteries
Topic: Geology
Summary: A new international project could help unlock secrets held deep beneath the surface of planet Earth.

Earth's Rapid Recycling
Topic: Geology
Summary: New research shows that Earth's crust recycles in volcanoes much faster than previously thought.

Half of Earth's Heat from Radioactive Decay
Topic: Geology
Summary: A new study shows that nearly half of Earth's heat comes from the radioactive decay of materials inside the planet.

Reservoirs of Ancient Lava Shaped Earth
Topic: Geology
Summary: New research shows that remnants of six of the largest volcanic events of the past 250 million years contain traces of Earth's primitive mantle. Such samples could provide information about the geochemical history of our planet.

Diamonds Pinpoint Start of Continent Collisions
Topic: Geology
Summary: Impurities in diamonds could help tell the story of Earth's ancient past. By studying mineral inclusions in diamonds, researchers have discovered that continents began breaking apart, drifting and colliding about 3 billion years ago.

Fool's Gold and the Rise of Oxygen
Topic: Geology
Summary: Fool's gold is providing insight into a turning point in the evolution of the planet Earth.

Earth's Ancient Rocks Move Around
Topic: Geology
Summary: New research shows that volcanoes and earthquakes can move ancient Earth rock foundations more than 1,000 miles.

How Hot Was the Eocene Earth?
Topic: Geology
Summary: The fossil record is providing new clues about how the Earth's temperature was affected by increasing CO2 concentrations 50 million years ago. The study could help astrobiologists understand how modern climate change could affect the future habitability of Earth.

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