Science & Technology

A team of seismologists from Washington University in St. Louis, like members of the starship Enterprise, will “boldly go where no man has gone before” after Thanksgiving this year. The team, led by Douglas A. Wiens, Ph.D., Washington University professor of earth and planetary sciences in Arts & Sciences, will go to remote regions of Antarctica to place seismographs in both east and west Antarctica to learn about the earth beneath the ice, and glean information about glaciers, mountains and ice streams.

British historian of science Janet Browne continues to explore Darwin’s evolutionary idea.

Timothy Trinidad leads a discussion with classmates (from left) David Schainker, Helena Wotring and Mamta Datwani. The students are part of a computer science engineering course taught by Burchan Bayazit, Ph.D., assistant professor of computer science and engineering. The course stresses “active learning,” and features group work, presentation skill and critiques.Kenneth J. Goldman, Ph.D., associate professor of computer science and engineering, is the recipient of a $562,000 grant from the National Science Foundation that will enable his department to transform undergraduate teaching methodology. Goldman and his fellow principal investigators are working to cultivate “active learning” in the classroom, with a significant increase in studio courses that involve team projects and interdisciplinary collaboration. In a culture marked by frequent critique, students will refine their design skills, as well as improve their ability to present and justify their designs and work in groups. Passive learning, typified by the traditional lecture, will be put on the backburner, though the flame will still burn low.

Mouse embryos stained to show MOF (green) and its histone tag (red) demonstrate that MOF is essential for cell proliferation.To make tumors more sensitive to the killing power of radiation is a key aspiration for many radiation oncologists. Researchers at the School of Medicine have uncovered new information that leads them closer to that goal. In an upcoming issue of the journal Molecular and Cellular Biology, they report the first extensive study of an enzyme called MOF that helps control how DNA is packaged in cells. The researchers show that MOF is an essential factor for tumor development, and they say it may be possible to manipulate the enzyme to make tumors more sensitive to radiation therapy.

As reservoirs of valuable information go, nothing beats the sun. This sphere of heat and energy holds 99.9 percent of the solar system, saved in all original proportions after planets and meteorites formed. Analyzing the mix of hydrogen, oxygen and noble gases found in the sun can answer one of the biggest questions of the universe: How did our solar system evolve? Scientists at Washington University in St. Louis and a large team of colleagues marked the beginnings of that odyssey by examining samples of solar wind for neon and argon, two abundant noble gases. The work was published in the Oct. 19, 2007, issue of Science.

WUSTL researcher Stanton Braude, Ph. D., lecturer in biology in Arts & Sciences, says the secret to a long life in humans might exist in the wrinkled body of one of the world’s ugliest animals — the naked mole rat.

Washington University researcher Stanton Braude, lecturer in biology in Arts & Sciences, says the secret to a long life in humans might exist in the wrinkled body of one of the world’s ugliest animals — the naked mole rat.

WUSTL senior Ruth Poland and Jonathan Chase, Ph.D., associate professor of biology and director of WUSTL’s Tyson Research Center, check species out in one of Tyson’s ponds.An ecologist at Washington University in St. Louis has discovered that after ponds dry up through drought in a region, when they revive, the community of species in each pond tends to be very similar to one another in species composition.

Photo by David KilperThat clover necklace you make for your child could be a ring of poison. That’s because some clovers have evolved genes that help the plant produce cyanide — to protect itself against herbivores such as snails, slugs and voles. Kenneth Olsen, Ph.D., assistant professor of biology in Arts & Sciences, is looking at the genetics of a wide variety of white clover plants to determine why some plants do and some plants don’t make cyanide. Ecology and geography play important roles.

Is that clover necklace you make for your child poison? It could be. Kenneth Olsen, Ph.D., Washington University assistant professor of biology in Arts & Sciences, is looking at the genetics of a wide variety of white clover plants to determine why some plants do and some plants don’t make cyanide. Ecology and geography play important roles.