Science & Technology

People learn better and recall more when given the impression that they will soon have to teach newly acquired material to someone else, suggests new research from the Department of Psychology in Arts & Sciences at Washington University in St. Louis.

L. Michael Brunt, newly named to lead the Section of Minimally Invasive Surgery at the School of Medicine, is a nationally recognized laparoscopic surgeon with expertise in abdominal, solid organ and biliary surgery.

Washington University in St. Louis’ Teaching Center brought together faculty from Arts & Sciences and the School of Engineering & Applied Science for the inaugural Summer STEM Faculty Institute on Teaching (STEM FIT), held June 17-19 in Seigle Hall. Faculty developed strategies for incorporating evidence-based teaching practices to improve student learning and encourage undergraduates to persist in STEM majors.

Re-examination of a circa 100,000-year-old archaic early human skull found 35 years ago in northern China has revealed the surprising presence of an inner-ear formation long thought to occur only in Neandertals.

The Venus Flytrap, with its two leaf jaws that sense when an insect approaches and quickly snap shut, is one of nature’s clearest examples of biology and mechanics working together to sustain life. Four doctoral students at Washington University in St. Louis will have the opportunity to take a closer look at this intersection under a five-year, $921,040 grant.

Joseph Jez, PhD, co-director of the plant and microbial biosciences graduate program at Washington University in St. Louis, is one of 15 professors nationwide to receive a $1 million HHMI grant to bring the creativity he has shown in the lab to the undergraduate classroom. He plans to use the grant to establish a two-year program called the Biotech Explorers Pathway that will introduce entering students to both the science and business of biotechnology.

A novel antibiotic delivery system would exploit small molecules called siderophores that bacteria secrete to scavenge for iron in their environments. Each bacterium has its own system of siderophores, which it pumps across its cell membrane before releasing the iron the siderophores hold. If an antibiotic were linked to one of these scavenger molecules, it would be converted into a tiny Trojan horse that would smuggle antibiotics inside a bacterium’s cell membrane.

Figuring out how to survive on a lean-season diet of hard-to-reach ants, slugs and other bugs may have spurred the development of bigger brains and higher-level cognitive functions in the ancestors of humans and other primates, suggests research from Washington University in St. Louis.

It has generally been assumed that people with episodic amnesia experience time much differently than those with more typical memory function. However, recent research by Washington University philosopher Carl F. Craver, PhD, disputes this type of claim. “There are sets of claims that sound empirical, like ‘These people are stuck in time.’ But if you ask, ‘Have you actually tested what they know about time?’ the answer is no.”

One in three American adults has high blood pressure. Jessica Wagenseil, DSc, associate professor of mechanical engineering, is investigating how mechanical properties of the cardiovascular system contribute to this widespread disease.