Science & Technology

Washington University’s Department of Genetics has established the Genome Technology Access Center to offer high-speed genome sequencing and other advanced genetic technologies to scientists both within and beyond the university.  

A ring-shaped laser no bigger than a pinprick can accurately detect and count individual viruses, the particles that jumpstart cloud formation or those that contaminate the air we breathe. A particle disturbs the light circulating in the ring, splitting the lasing frequency. This split is a measure of the particle’s size.

DNA analysis of more than 1300 coconuts from around the world reveals that the coconut was brought under cultivation in two separate locations, one in the Pacific basin and the other in the Indian Ocean basin. What’s more, coconut genetics also preserve a record of prehistoric trade routes and of the colonization of the Americas.

Picture a menacing drill sergeant, a gory slaughterhouse, a devastating scene of a natural disaster. Researchers at Washington University in St. Louis have found that viewing such emotion-laden images immediately after taking a test actually enhances people’s retention of the tested material.

A team of scientists from Washington University in St. Louis and Monsanto, a St. Louis-based company that makes the glyphosate-based Roundup herbicides, were able to follow molecules of the herbicide as they entered a resistant weed and to discover exactly how the plant disarms it. In a second paper they describe a herbicide application technique that can be used to outfox the resistance mechanism they had discovered.

Educators from across St. Louis will build and test robots using LEGOs as they explore teaching science, technology, engineering and math in grades K-12. They will share strategies for using the LEGO MINDSTORMS NXT, which can turn the building toys into programmable robots, during an all-day conference Friday, June 17, at Washington University’s Whitaker Hall. 

Kevin Moeller, PhD, professor of chemistry in Arts & Sciences at Washington University in St. Louis, is working to find ways to use clean energy in clean chemistry. “We can make the oxidation reactions used in the synthesis of organic molecules cleaner by hitching photovoltaics to electrochemistry,” Moeller says. It’s not a new idea, but one Moeller and his colleagues hope catches on.

The Young Scientist Program (YSP) will mark its 20th anniversary with a day-long symposium at 8:30 a.m. Monday, June 6, at Washington University School of Medicine.

The Optical Society (OSA) has awarded the C.E.K. Mees Medal to Lihong V. Wang, PhD, the Gene K. Beare Distinguished Professor of Biomedical Engineering at Washington University in St. Louis. The medal was given for Wang’s seminal contributions to photoacoustic tomography and Monte Carlo modeling of photon transport in biological tissues and for leadership in the international biophotonics community.

Washington University in St. Louis hydrogeologist Robert Criss, PhD, wasn’t particularly surprised by the spring floods on the Mississippi this year. Floods are becoming more frequent and more severe, he says. “We are increasingly constraining the river by building wing dikes and higher levees and then upping the ante by building in the river’s natural flood plains” Criss says. “There are far better ways to deal with this problem than have municipalities compete with one another to build the highest levee and fight over who has the right to be protected in times of distress.”