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Steep oxygen decline halted first land colonization by Earth's sea creatures
10-23-2006 · EurekAlert!New research suggests a multimillion year gap in the colonization of Earth's land by marine creatures might have been caused by a sharp drop in atmospheric oxygen.
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Keywords: steep, oxygen, decline, halted, land, colonization, earth, sea, creatures, creature
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04-23-2007 · EurekAlert!
Topics include: evidence that Devonian-Silurian Prototaxites, Earth's largest land organisms up to that time, were actually giant fungi; discovery of a spectacular 300-million-year-old fossil forest in an Illinois coal mine; migration of sharks into freshwater systems during the Miocene; Hawaiian hotspot track preserved in the Bering Sea; and first evidence of tidal-channel sponge biostromes in southeastern Florida.
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- From the deep -- Researchers find new species of sea anemone
05-16-2007 · EurekAlert!
Researchers cruising for creatures that live in the deepest parts of the Pacific Ocean found a new species of sea anemone living in the unlikeliest of habitats -- the carcass of a dead whale. A marine biologist would say that discovering a new sea anemone isn't so unusual. But finding one that calls a dead whale home is what sets this new creature apart.
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- Arctic sea ice decline may trigger climate change cascade, says University of Colorado study
03-15-2007 · EurekAlert!
Arctic sea ice that has been dwindling for several decades may have reached a tipping point that could trigger a cascade of climate change reaching into Earth's temperate regions, says a new University of Colorado at Boulder study.
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- NASA celebrates a decade observing climate impacts on health of world's oceans
09-19-2007 · EurekAlert!
The NASA-managed Sea-viewing Wide Field-of-view Sensor instrument settled into orbit around Earth in 1997 and took its first measurements of ocean color. A decade later, the satellite's data has proved instrumental in countless applications and helped researchers paint a picture of a changing climate.
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- Researchers detect hint of oxygen 50 to 100 million years earlier than first believed
09-27-2007 · EurekAlert!
Two teams of scientists, including UC Riverside geochemists, report in the Sept. 28 issue of Science that traces of oxygen appeared in Earth's atmosphere roughly 100 million years before the "Great Oxidation Event" 2.4 billion years ago.
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- Den Mothers: Bears shift dens as ice deteriorates
07-21-2007 · Science News Online
As Arctic ice has dwindled, pregnant polar bears in northern Alaska have become more likely to dig their birthing dens on land or nearshore ice than on floating masses of sea ice.
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- Freshwater snails are surprisingly fast-moving invaders
12-04-2006 · EurekAlert!
A new study sheds light on some very fast snails and their success at long-distance colonization. Introduced into the rivers of the Martinique islands less than twelve years ago, the freshwater snails have already colonized the watersheds, an astounding feat considering that the snails need to rely on passive dispersal by birds, cars and cattle to jump over the dry land that separates the riverways.
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- Microscopic sea creatures provide foundation for gas sensors and other devices
03-08-2007 · EurekAlert!
The three-dimensional shells of tiny ocean creatures could provide the foundation for novel electronic devices, including gas sensors able to detect pollution faster and more efficiently than conventional devices.
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- Earth from Space: Swains Island
01-12-2007 · European Space Agency (ESA)
Swains Island, located in the South Pacific Ocean, is highlighted in this Proba image. This small coral atoll is comprised of an outer perimeter (approximately 13 km in circumference) of flat coral reefs and a 2.5 kmВІ ring-shaped landmass surrounding a shallow fresh-water lagoon in the centre that is closed off from the sea.
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- Space Shuttle due to return to Earth
06-22-2007 · European Space Agency (ESA)
Following an 8-day visit to the International Space Station, Space Shuttle Atlantis is due to land in Florida later today.
For the latest status reports and live coverage of the landing, see the NASA website.
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