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Large Predators Roamed Oceans Soon after Permian Extinction
Topic: Biosphere
Summary: A new study shows that large predators roamed the oceans soon after the End-Permian extinction--suggesting that ecosystems recovered more rapidly than previously thought.

Unlocking Darwin's 'Mystery of Mysteries'
Topic: Origin & Evolution of Life
Summary: Hybrid incompatibility -- failure of 2 closely related species to produce offspring that survive and reproduce -- has puzzled scientists beginning with Charles Darwin.

Global Warming May Increase Methane Emissions from Freshwater Ecosystems
Topic: Climate
Summary: New research suggests that rising global temperatures will increase the quantity of methane emitted from freshwater ecosystems to the Earth's atmosphere - which could in turn lead to further warming.

A Hypothesis for Continued Habitability on Earth
Topic: Geology
Summary: Throughout Earth's history, geological cycles may have acted to provide a balance of hot and cold that has helped maintain our planet's habitability.

Ancient Food Webs Show Modern Structure after Mass Extinction
Topic: Biosphere
Summary: A new study reveals that an ancient food web was organized much like modern food webs--despite the 48 million years of evolution that separate them.

Astronomers Looking for Clues to Water's Origins
Topic: Cosmic Evolution
Summary: What happens at the birth of a star may determine whether water is commonplace or rare in other solar systems.

Solar System's Edge Redefined
Topic: Outer Solar System
Summary: Astronomers have extended the edge of the known Solar System by spotting a new dwarf planet. The finding also indicates the possible presence of a giant planet somewhere in the dark, cold region of space far from the Sun.

The New Wave in Exoplanet Astronomy: Near-Earths in the Near-Visible
Topic: Missions
Summary: Astronomers are getting closer to using ground-based telescopes to detect Earth-like planets in visible wavelengths.

Mercury’s Contraction Much Greater Than Thought
Topic: Mercury
Summary: New data show that the innermost planet has contracted far more than previously thought. The findings are key to understanding the planet's history and the structure of its unusually large metallic core.

A Wet Moon
Topic: Moon to Mars
Summary: A new study shows that basalts from the Moon's mantle contain hydrogen from water indigenous to Earth.

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