The Food and Drug Administration approved a new drug to prevent chickens from becoming infected with food-poisoning microbes such as Salmonella.

A proposed collaboration between the French Space Agency and NASA may nearly double the U.S. budget for obtaining samples of Mars over the next decade and would provide additional, small-scale flights to the Red Planet.

 

Materials that change temperature in a magnetic field could form the basis of refrigerators cold enough to liquefy hydrogen.

Keeping mice in the cold turns on a gene that may control adaptive thermogenesis, a mechanism the body uses to dissipate excess calories.

Researchers have discovered a vast layer of debris from a giant submarine landslide.

Tropical wrens hand down traditional song repertoires, father to son and mother to daughter.

Investigators have found that a class of immune cells thought invulnerable to HIV infection may sometimes make a protein allowing the AIDS virus to infect them.

Research Notes

Earth’s upper stratosphere has grown soggier since 1991.

Forecasters predict the El Niño conditions in the Pacific will last for several more months.

Upsetting the traditional view of the agricultural revolution, archaeologists identified a huge hillside settlement that arose 3,000 years ago and was relatively slow to cultivate crops.

Biomedicine
An enzymatic sex difference 

Gender difference in heart disease may be due to enzyme.

Cigars linked to heart disease.

Migraines may increase risk of heart disease.

Physics
Chemistry smoothes out silicon surface 

Etching silicon with an acid can make the surface perfectly flat, offering atomic level control of features on computer chips.

Swirling an electron cloud can mimic what happens in turbulent fluids.

 Foamy silk reveals clues about the structure of the protein.

The lack of effective detection methods hinders removal of the 100 million land mines buried around the world.

A growing line of research emphasizes the influence of collective beliefs about fairness and morality on economic practices.