Author: Diana Lutz

This fall Joan Strassmann, PhD, professor of biology in Arts & Sciences taught a course in behavior ecology that was also an official Wikipedia course that required students both to edit an existing Wikipedia entry and then either add 25 references and 2500 words to a second entries or to create new ones. “No work by students as good as Washington University’s students should ever end up in a professor’s drawer,” said Strassmann. “It was their responsibility as smart people who were getting a great education to help others.”

Coverage of the recent shipping crisis on the Mississippi River assumes that the appropriate response to a problem like low water levels is to find an engineering solution. Washington University in St. Louis hydrogeologist Robert E. Criss disagrees. He feels the river has been over-engineered and that many of the engineering “solutions” are not economic if all of their costs, including those to the taxpayer and to the environment, are taken into account.

Over the holiday weekend, the WUSTL-led cosmic ray experiment Super-TIGER set a record for the longest flight ever made by a heavy-liftscientific balloon. Now aloft for 45 days, shattering the previous record of 42 days, it has recorded more than 50 million “events,” or hits by cosmic rays arriving from space. The scientists are ecstatic to have such a great balloon because the longer the it stays up, the more data they will collect and the more they will learn about the mysterious mechanism that accelerates these particles and sends them streaming across space.

Scientists at Washington University in St. Louis long suspected that dueling findings about the impact of invasive species on biodiversity reflect the different sizes of study sites. Now field work confims that the impact of invasive species is different at small scales than at large ones. The scientists hope an understanding of this “scale dependence” will help settle arguments that have broken out in the scientific community and discourage recent popular science articles downplaying the damage invasives cause.

 Super-TIGER  the WUSTL-led cosmic ray experiment, has just been given the green light for  a third circuit around Antarctica. If the balloon stays up for a complete circuit it will probably break the heavy-lift scientific ballooning record of 42 days — and bring in a rich haul of data about cosmic rays, charged particles that continually bombard the Earth from space. The team has gone positively piratical over the prospect of more booty.

We would all like to believe that there is a kind of karma in life that guarantees those who cheat eventually pay for their bad behavior, if not immediately, then somewhere down the line. But a study of a new gene in the amoeba Dictyostelium discoideum suggests that, at least for amoebae, it is possible to cheat and get away with it.

Invisible high-velocity particles rain down on Earth day in and day out, but  it has taken 100 years and clever deduction  for physicists to figure out what they’re made of and where they come from. Although some details are still unclear, physicists have built a case that the cosmic rays are born in volleys of supernova explosions in OB associations, loose associations of hot, massive stars sprinkled throughout our galaxy.

The Super-TIGER comic-ray experiment had a perfect launch Sunday 9:45 am  New Zealand Daylight Time. The enormous balloon that will carry it to the limits of Earth’s atmosphere was stretched out on the ice and then partially filled.  As it came up off the ice, the balloon rose over the downstream instrument. When it was directly overhead the Boss released the  two-ton cosmic-ray instrument and it was lofted effortlessly into the skies over Antarctica.

The word from Antarctica is that the polar vortex is setting up early this year and the balloon-borne Super-TIGER cosmic-ray experiment may be launched into the vortex any day now. Once the launch starts, web cams and a tracking map will go live at NASA’a Columbia Scientific Balloon Facility site Blogs and Twitter feeds are already providing a lively running commentary on the buildup to launch.

Nanostructures called BRIGHTs seek out biomarkers on cells and then beam brightly to reveal their locations. In the tiny gap between the gold skin and the gold core of the nanoparticle, there is an electromagnetic hot spot that lights up the reporter molecules trapped there. BRIGHTs, which shine about 1.7 x 1011 more brightly than isolated Raman reporters, are intended for use in noninvasive bioimaging.