Science & Technology

Ralph J. Cicerone, PhD, president of the National Academy of Sciences and chair of the National Research Council, will present a seminar on climate change at Washington University in St. Louis at 4 p.m. Monday, Jan. 23, in Room 300, Laboratory Sciences Building on the Danforth Campus.

NASA has just funded Henri Krawczynski and his colleague Matthias Beilicke,  to launch a balloon-borne telescope sensitive to the polarization of light that will float at an altitude of 130,000 feet for a day. During that time, the balloon will stare fixedly at two black holes in our galaxy, an accreting neutron star, the Crab nebula, an extragalactic black hole and other targets yet to be chosen. One of the first instruments of its type, it should be able to make the first direct measurements of the spin rate of black holes, among other advancements.

A biology lab at Washington University in St. Louis has successfully cracked the structure of an enzyme made by Plasmodium falciparum, the parasitical protozoan that causes the most lethal form of malaria. Plasmodium cannot live without the enzyme, which is uses to make cell membrane. Because people don’t make this enzyme, it is an ideal target for an anti-malarial drug.  Such a drug might kill Plasmodium but have minimal side effects for people.

U.S. Sen. Claire McCaskill will participate in a roundtable discussion with Washington University in St. Louis administrators and energy researchers, and the region’s energy leaders on the nation’s urgent energy needs. The roundtable energy discussion will be held at noon Monday, Jan. 9, at Washington University’s Brauer Hall, Room 3015, followed by a tour of WUSTL’s Ultrafast Laser Facility. 

In the December 24 issue of Physical Review Letters, WUSTL physicist Ramanath Cowsik and his collaborators put their finger on a problem with the now-famous OPERA experiment that reported faster-than-light, or superluminal, neutrinos last September. Cowsik raises theoretical considerations that would make the creation of superluminal neutrinos impossible.

Lead pipes once used routinely in municipal water distribution systems are a well-recognized source of dangerous lead contamination, but new research from Washington University in St. Louis suggests that the partial replacement of these pipes can make the problem worse. The research shows that joining old lead pipes with new copper lines using brass fittings spurs galvanic corrosion that can dramatically increase the amount of lead released into drinking water supplies.

Any multicellular animal poses a special difficulty for the theory of evolution. Most of its cells will die without reproducing, and only a privileged few will pass their genes. Given the incentive for cheating, how is cooperation among the cells enforced? In the Dec. 16 issue of the journal Science, Washington University in St. Louis biologists Joan Strassmann and David Queller suggest the answer is frequent population bottlenecks that restart populations from a single cell.

Some WUSTL news stories never get old, and some just get better with time. WUSTL news editors picked 11 stories from 2011 — some new, some old — but all worth a second look as we head into 2012.

Jennifer K. Lodge, PhD, and Ernst Zinner, PhD, have been named fellows of the American Association for the Advancement of Science (AAAS), the world’s largest general scientific society. Lodge and Zinner are among 539 new fellows who will be acknowledged in the Dec. 23 issue of Science magazine.The 2011 AAAS Fellows also will be honored at a Feb. 18, 2012, ceremony at the organization’s annual meeting in Vancouver, Canada.

Ernst K. Zinner, research professor of physics and of earth and planetary sciences, both in Arts & Sciences at Washington University in St. Louis, has received a three-year, $1,380,000 grant from the National Aeronautics and Space Administration to study presolar grains in a sample of the Murchison meteorite, a primitive meteorite that fell to Earth near the town of Murchison, Australia, in 1969. Presolar grains are literally tiny bits of stars — stardust — that were born and died billions of years ago, before the formation of the solar system. Some carry within them clues to the process of nucleosynthesis by which new elements are forged in the bellies of supernovae.