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Rethinking Early Atmospheric Oxygen: Possibility of More Dynamic Biological Oxygen Cycle on Early Earth Than Previously Supposed
April 24, 2013 — Using a quantitative model, a research team of biogeochemists has provided a new view on the relationship between the earliest accumulation of oxygen in the atmosphere, arguably the most important ... > full story -
Iron in Primeval Seas Rusted by Bacteria
April 23, 2013 — Researchers have been able to show for the first time how microorganisms contributed to the formation of the world's biggest iron ore deposits. The biggest known deposits -- in South Africa and ... > full story -
Fish Was on the Menu for Early Flying Dinosaur
April 22, 2013 — New research reveals that Microraptor, a small flying dinosaur, was a complete hunter -- able to swoop down and pick up ... > full story -
Geochemical Method Finds Links Between Terrestrial Climate and Atmospheric Carbon Dioxide
April 22, 2013 — Scientists used a new chemical technique to measure the change in terrestrial temperature associated with a major shift in global atmospheric CO2 concentrations nearly 34 million years ago. Their ... > full story -
Anatomist Is Fleshing out Dinosaur Heads, Reaching People About Science
April 22, 2013 — Accurately depicting dinosaur anatomy has come a long way since the science fiction films of the ... > full story -
Formula Can Calculate a Person's Speed by Just Looking at Their Footprints
April 22, 2013 — Scientists have designed an equation that provides a highly accurate estimate of an individual's speed based on stride length. They used data from professional athletes and walking and running ... > full story -
Ant Family Tree Constructed: Confirms Date of Evolutionary Origin, Underscores Importance of Neotropics
April 22, 2013 — Several hypotheses have been proposed to explain the higher species numbers in the tropics, but these hypotheses have never been tested for the ants, which are one of the most ecologically and ... > full story -
Nitrogen Has Key Role in Estimating Carbon Dioxide Emissions from Land Use Change
April 19, 2013 — A new global-scale modeling study that takes into account nitrogen -- a key nutrient for plants -- estimates that carbon emissions from human activities on land were 40 percent higher in the 1990s ... > full story -
Measuring the Hazards of Global Aftershock
April 19, 2013 — The entire world becomes an aftershock zone after a massive magnitude (M) 7 or larger earthquake -- but what hazard does this pose around the ... > full story -
New Carnivorous Dinosaur from Madagascar Raises More Questions Than It Answers
April 18, 2013 — The first new dinosaur named from Madagascar in nearly a decade, Dahalokely tokana was a carnivore measuring 9-14 feet long. Its fossils were found in 90-million-year-old rocks of northernmost ... > full story
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