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First Land Animals Kept Fishlike Jaws for Millions of Years
April 30, 2013 — For the first time, fossil jaw measurements confirm that land animals developed legs millions of years before their feeding systems changed enough to let them eat a land-based diet. The pattern had ... > full story -
Competing for Milk Can Be a Stressful Thing for Hyena Twin Siblings
April 30, 2013 — Researchers have demonstrated for the first time in a free-ranging mammal that hunger and conflict for access to resources can be “stressful” for subordinate siblings and socially ... > full story -
Membrane Remodeling: Where Yoga Meets Cell Biology
April 30, 2013 — Endocytosis lets cells absorb nutrients, import growth factors, prevent infections and accomplish many other vital tasks. This study suggests that, in contrast to earlier theories, dynamin proteins ... > full story -
Tactics of New Middle East Virus Suggest Treating by Altering Lung Cells' Response to Infection
April 30, 2013 — The deadly Human Coronavirus-Erasmus Medical Center, which first appeared April 2012 in the Middle East, is revealing its stronghold tactics. The virus dysregulates 207 lung cell genes to turn RNA ... > full story -
Smoke Signals: How Burning Plants Tell Seeds to Rise from the Ashes
April 29, 2013 — In the spring following a forest fire, trees that survived the blaze explode in new growth and plants sprout in abundance from the scorched earth. For centuries, it was a mystery how seeds, some long ... > full story -
Scientists Discover How a Protein Finds Its Way
April 29, 2013 — Scientists have uncovered how an enzyme co-factor can bestow specificity on a class of proteins with otherwise nonspecific biochemical activity. Proteins can have more than one function, but they ... > full story -
Silicone Liquid Crystal Stiffens With Repeated Compression: Discovery May Point Toward Self-Healing Materials
April 29, 2013 — Scientists have found that liquid crystalline silicone stiffens significantly when compressed repeatedly for hours on end. The discovery may lead to new strategies for self-healing materials or ... > full story -
Microchip Proves Tightness Provokes Precocious Sperm Release
April 29, 2013 — Sperm cell release can be triggered by tightening the grip around the delivery organ, according to a team of nano and microsystems engineers and plant ... > full story -
World's Longest-Running Plant Monitoring Program Now Digitized
April 29, 2013 — Researchers have digitized 106 years of growth data on the birth, growth and death of individual plants on Tumamoc Hill in Tucson, Ariz., making the information available for study by people all over ... > full story -
Cat and Mouse: One Gene Is Necessary for Mice to Avoid Predators
April 29, 2013 — A new study involving olfactory receptors provides evidence that a single gene is necessary for a mouse to avoid a cat. A research team has shown that removing one olfactory receptor from mice can ... > full story
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