RICHLAND, Wash. – Scientists have created a microbattery that packs twice the energy compared to current microbatteries used to monitor the movements of salmon through rivers in the Pacific Northwest and around the world.

The battery, a cylinder just slightly larger than a long grain of rice, is certainly not the world's smallest battery, as engineers have created batteries far tinier than the width of a human hair. But those smaller batteries don't hold enough energy to power acoustic fish tags. The new battery is small enough to be injected into an organism and holds much more energy than similar-sized batteries.

Coral Gables, Fla. (Feb. 17, 2014) -- There is a big effort in industry to produce electrical devices with more and faster memory and logic. Magnetic memory elements, such as in a hard drive, and in the future in what is called MRAM (magnetic random access memory), use electrical currents to encode information. However, the heat which is generated is a significant problem, since it limits the density of devices and hence the performance of computer chips.

Scientists are now proposing a novel approach to achieve greater memory density while producing less heat: by using an electric field instead of a current to turn magnetism on and off, thereby encoding the electrical devices.

NASHVILLE, Tenn. – To develop correctly, baby hearts need rhythm...even before they have blood to pump.

"We have discovered that mechanical forces are important when making baby hearts," said Mary Kathryn Sewell-Loftin, a Vanderbilt graduate student working with a team of Vanderbilt engineers, scientists and clinicians attempting to grow replacement heart valves from a patient's own cells.

In an article published last month in the journal Biomaterials the team reported that they have taken an important step toward this goal by determining that the mechanical forces generated by the rhythmic expansion and contraction of cardiac muscle cells play an active role in the initial stage of heart valve formation.

We tend to think of antibiotic resistance as a product of modern medicine and the mutation ability of pesky viruses to get around dying.

Writing in the journal Applied and Environmental Microbiology, a team of investigators say they have discovered viruses containing genes for antibiotic resistance in a fossilized fecal sample from 14th century Belgium, long before antibiotics were used in medicine. 

The widespread loss of forest to sugarcane fields on the island of Mauritius has forced kestrels living there to survive by speeding up their life histories, according to a report published online on February 20 in the Cell Press journal Current Biology. By getting an earlier start, the birds are managing to have just as many offspring, even though they die sooner.

Those changes to the kestrels' life history are apparently driven entirely by their early life experiences, the researchers say.

JUPITER, FL, February 20, 2014 – The use of antibiotics is often considered among the most important advances in the treatment of human disease. Unfortunately, though, bacteria are finding ways to make a comeback. According to the Centers for Disease Control, more than two million people come down with antibiotic-resistant infections annually, and at least 23,000 die because their treatment can't stop the infection. In addition, the pipeline for new antibiotics has grown dangerously thin.

Now, a new study by scientists from the Florida campus of The Scripps Research Institute (TSRI) has uncovered a mechanism of drug resistance. This knowledge could have a major impact on the development of a pair of highly potent new antibiotic drug candidates.