Arts & Sciences

It’s no laughing matter that older adults have a tougher time understanding basic jokes than do younger adults. It’s partially due to a cognitive decline associated with age, according to University researchers Wingyun Mak, a graduate student in psychology in Arts & Sciences, and Brian Carpenter, Ph.D., associate professor of psychology.

Photo by David KilperBill Rosser, a biology teacher from Fayetteville, Ark., and Barbara Schaal, Ph.D., the Spencer T. Olin Professor of Biology in Arts & Sciences, gather aquatic invertebrates from a pond at Tyson Research Center during the ecology component of the inaugural Life Sciences for a Global Community summer institute, held at various parts of campus July 8-27.

Robert E. Blankenship, Ph.D., professor of biology and chemistry in Arts & Sciences, was installed as the first Lucille P. Markey Distinguished Professor March 6 in Holmes Lounge.

The coconut has been popular in lore and on palates for centuries, yet little is known about the history of this palm’s domestication and dispersal around the world. Now, Kenneth M. Olsen, Ph.D., assistant professor of biology in Arts & Sciences, is embarking on the task of understanding the plant’s history by exploring the genetics of the coconut.

Caves are in trouble, at least in St. Louis County, Missouri, says Robert Criss, Ph.D., professor of Earth and Planetary Sciences in Arts & Sciences at Washington University in St. Louis, co-author of a scholarly paper that documents, archives and describes the status of all the known 127 caves found in the 508 square mile county.

Image courtesy of NASAThe Mars Reconnaissance Orbiter (MRO) taking pictures of Mars.A software program developed by researchers at Washington University in St. Louis is allowing access to planetary data and early images from the most powerful spectral camera ever sent to Mars. The information is now available on NASA’s online planetary data archive.

GibsonA 2002 U.S. Supreme Court decision protecting the right of judicial candidates to speak freely about controversial issues opened the door for state judicial election campaigns to become increasingly nasty, bitter and politicized. However, the Court’s decision has not directly damaged the court system’s legitimacy in the eyes of citizens, suggests a new study from Washington University in St. Louis.

The next generation of consumers will be the true beneficiaries of the promise of genomics. But how will they make informed choices in a world resplendent with genomics products, including tools to predict disease and the engineered drugs to treat those diseases? The answer, says Sarah C.R. Elgin, Ph.D., WUSTL professor of biology in Arts & Sciences, is more genetics and genomics at every level of American education.

NASA/JPL-Caltech/E.Churchwell (U. of WisconsinThe nebula RCW49 is a nursery for newborn stars and exists in circumstellar space, where chemistry is done for the very first time.Picture a cool place, teeming with a multitude of hot bodies twirling about in rapidly changing formations of singles and couples, partners and groups, constantly dissolving and reforming. If you were thinking of the dance floor in a modern nightclub, think again. It’s a description of the shells around dying stars, the place where newly formed elements make compounds and life takes off, said Katharina Lodders, Ph.D., research associate professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis.

Researchers at Washington University in St. Louis have discovered through genetic analyses a metabolic pathway in bacteria comprised of just three genes, all known to be players in metabolism. This pathway was previously shown to be involved in synthesizing modified membrane lipids but data from Petra Levin’s lab indicate that it also has a major role in cell division. This is the first identification of a pathway responsible for regulating bacterial cell size.