If a zebrafish loses a chunk of its tail fin, not to worry, it'll grow the fin back within a week. Now scientists think they know how. Read more…

Scientists have created a keypad lock a single molecule in size. This lock only activates when exposed to the correct password, a sequence of chemicals and light. Read more…

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A fossil of a leaf-imitating insect from 47 million years ago has a striking resemblance to modern mimickers. Read more…

A large majority of Americans say they support changes in public policy to stem the rising tide of obesity among adults, a new survey shows. Read more…

Scientists have discovered a new gene that makes mice happy, a finding that suggests another avenue of drugs for improving depression in humans. Read more…

At least 1,000 species communicate by sound, and scientists are only beginning to discover the range of bizarre noise-making and listening techniques. Read more…

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A new strategy for treating bacterial disease without producing drug-resistant strains. Read more…

Beneath a slimy faade, the sea slug is somewhat of a brainiac. At any given time within a single brain cell, more than 10,000 genes are hard at work. Read more…

Adults with kids in the home eat more saturated fat-the equivalent of about one frozen pepperoni pizza each week-than do adults who don't live with children, scientists report. Read more…

Recovering from a hangover? A cup of coffee won't sober you up, popping Tylenol can be bad for your liver, and the hair of the dog will only prolong your pain. Read more…

AP - A team of mechanical engineers funded by the Pentagon has an idea for saving the lives of troops in Iraq: An airless tire that won't go flat if shot or hit by shrapnel from a roadside bomb. Read more…

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Scientists can predict how the distance marine larvae travel varies with ocean temperature -- a key component in conservation and management of fish, shellfish and other marine species -- according to a new study from the University of North Carolina at Chapel Hill. Read more…

High blood pressure may seem like something that only adults get, but children can develop it too -- and it can pose serious risks to their hearts, brains and lives. While medications may help some children, a new study shows that for kids with a rare but especially dangerous form of hypertension, surgery is the best option. Read more…

One key to your high blood pressure might just be your inflammatory genes. It may sound odd but mounting evidence suggests that inflammation, a part of the immune response implicated in diseases such as cancer, Alzheimer's and diabetes, may also help translate stress into high blood pressure. Read more…

A humanized mouse model may be valuable for not only studying sex differences in RA, but also for understanding why women are particularly vulnerable to autoimmunity and for developing future therapeutic strategies. Read more…

Current understanding of the co-evolution of bats and moths has been thrown into question following new research reported in the journal Current Biology. Read more…

Medical teams -- not individuals -- are critical to the prevention of catheter-related bloodstream infections, as well as for the overall health, safety, and welfare of patients, according to an editorial by two Virginia Commonwealth University physicians published in today's issue of the New England Journal of Medicine. Read more…

Western U.S. wildfires are likely to increase in the coming decades, according to a new tree-ring study led by the University of Comahue in Argentina and involving the University of Colorado at Boulder that links episodic fire outbreaks in the past five centuries with periods of warming sea surface temperatures in the North Atlantic. Read more…

Testing the eyes of preterm children when they reach 2.5 years of age may predict vision problems at age 10, according to a report in the November issue of Archives of Ophthalmology, one of the JAMA/Archives journals. Read more…

Preliminary findings from a revolutionary satellite system launched earlier this year show that the system can boost the accuracy of forecasts of hurricane behavior, significantly improve long-range weather forecasts, and monitor climate change with unprecedented accuracy. There will be a press conference/teleconference at 5 p.m. Eastern Time today. Read more…