Science & Technology

Nearly 40 years after the Apollo astronauts first brought samples of the Moon to Earth for study, researchers from Washington University in St. Louis are leading an effort to return to the Moon for samples that could unlock secrets of the early Solar System. Known as MoonRise, the proposed Moon mission is one of three finalists now bidding to become NASA’s next big space science venture, a $650 million mission that would launch before 2019.

NASA’s robotic rover Spirit, bogged down in the loose soil of a Red Planet crater for months, has helped make an important scientific discovery just by spinning its wheels. “We’ve found something supremely interesting in the disturbed soil,” says WUSTL’s Raymond Arvidson, deputy principal scientist on the mission. Sulfate minerals churned up by the rover’s wheels offer evidence that this area “could have once supported life,” he explains.

A tiny sensor that exploits the same physics as the whispering gallery in St. Paul’s Cathedral in London will help make nanotechnology safer.

Robert Kranz has devoted much of his caeer to understanding cytochrome c, a little-noted molecule but one as important to life as DNA or hemoglobin. Because bacteria and people use different systems to assemble this molecule, his work may open the door to novel antibiotics and other medicinal drugs.

Heme, a crucial component of the biomachinery that squeezes energy out of food, must be transported across membranes but without exposing its central iron atom to oxidation. Work at Washington University shows how it is done.

An international group of anthropologists offers a new theory about the diffusion of maize to the Southwestern United States and the impact it had. Published in the Proceedings of the National Academy of Sciences, the study, co-authored by Gayle Fritz, Ph.D., professor of anthropology in Arts & Sciences, and colleagues, suggests that maize was passed from group to group of Southwestern hunter-gatherers. These people took advantage of improved moisture conditions by integrating a storable and potentially high-yielding crop into their broad-spectrum subsistence strategy.

Nearly 100 years after the discovery of cosmic rays, a new type of gamma-ray telescope is finally allowing physicists to make images of cosmic-ray nurseries.

A group at Washington University recently tackled a simple circuit in the visual processing area of a chicken’s brain that detects motion in its field of view — with surprising results.

A tiny cage of gold covered with a smart polymer responds to light, opening to empty its contents and resealing when the light is turned off. The smart nanocages could be used to deliver drugs directly to target sites, thus avoiding systemic side effects.

The architects of the National Research Council’s roadmap for the next decade, “America’s Energy Future: Technology and Transformation,” will meet with top officers of energy companies today to discuss this capstone report that recommends investing in clean energy technologies. The meeting will be held from 12:30 to 5:30 p.m. Monday, Nov. 2, 2009, at Washington University’s May Auditorium in Simon Hall.