Arts & Sciences

Washington University students still can enroll in one of the 11 online courses being offered this fall through Semester Online, a consortium of top peer universities. Students have until Aug. 26 to register. Courses include a live weekly class plus pre-produced online content that engages students, such as guest interviews and panel discussions.

Bacteria adjust to wide fluctuations in food supply by controlling how big they get and how often they divide. Scientists at Washington University in St. Louis have just worked out the control system E. coli use to delay division so they can bulk up when food suddently becomes abundant. What can be delayed can also be stopped, so the control system may provide an opportunity to design a new class of antibiotics.

New research from Washington University in St. Louis offers compelling evidence that a well-connected core brain network based in the lateral prefrontal cortex and the posterior parietal cortex — parts of the brain most changed evolutionarily since our common ancestor with chimpanzees — contains “flexible hubs” that coordinate the brain’s responses to novel cognitive challenges.

Kevin Hays is considered one of the globe’s best Rubik’s Cube solvers, but he’s not the only Rubik’s Cube master on the Washington University in St. Louis campus. Provost Holden Thorp also won Rubik’s Cube competitions as a teenager.

In June, a rover named Zoe set out into the Atacama Desert on the west coast of South America to test a suite of instruments intended for future missions to Mars under Mars-like conditions. One of the instruments aboard Zoe was a Raman spectrometer designed by a team led by Alian Wang of Washington University in St. Louis. A fragile lab instrument that was ruggidized to survive the desert, the Raman spectrometer is expected to fly on the 2020 Mars mission.

Some social amoebae farm the bacteria they eat. Now a collaboration of scientists at Washington University in St. Louis and Harvard University has taken a closer look at one lineage, or clone, of  D. discoideum farmer. This farmer carries not one but two strains of bacteria. One strain is the “seed corn” for a crop of edible bacteria, and the other strain is a weapon that produces defensive chemicals. The edible bacteria, the scientists found, evolved from the toxic one.

The International Society of Photosynthesis Research, meeting this August in St. Louis, is offering an afternoon of talks and demonstrations about the original “green” chemistry invented by bacteria and plants and its relevance to our energy future. Intended for teachers, students and the public, “Photosynthesis in our Lives” will take place from 3- 5 p.m. the afternoon of Sunday, August 11, 2013 in the Parkview room at the Hyatt Regency at the Arch.  RSVP to: http://parc.wustl.edu/outreachRSVP by August 7, 2013.

University College, the adult, evening and continuing education division in Arts & Sciences at Washington University in St. Louis, has developed three new degree programs, including a master’s in statistics that is the only one offered in the St. Louis area. The other two new  programs are a bachelor’s in communications and a bachelor’s in journalism. University College will offer the new programs this fall semester, which begins Aug. 27.

Washington University in St. Louis chemist D. André d’Avignon, who manages the university’s high-resolution nuclear magnetic resonance facility, has been named the winner of the 2013 Saint Louis Award. The Saint Louis Award, administered by the St. Louis section of the American Chemical Society, is given to an individual who has made outstanding contributions to the profession of chemistry and demonstrated the potential to further the advancement of the chemical profession.

With the help of modern genetic technology and the resources of the International Rice GeneBank, which contains more than 112,000 different types of rice, evolutionary biologist Kenneth Olsen has been able to look back in time at the double domestication of rice (in Asia and in Africa) and its double “de-domestication” to form two weedy strains. Olsen predicts the introduction of pesticide-resistant rice will drive ever faster adaptation in weedy rice.