Latest Washington University in St. Louis Stories

Scientific Balloon Record Shattered By Super-TIGER
2013-01-23 09:53:00

Washington University in St. Louis Before he left for Antarctica in November, W. Robert Binns, principal investigator for Super-TIGER, said that he would be deliriously happy if the balloon carrying the cosmic-ray detector stayed up 30 days. It has now been up 45 days, floating serenely in the polar vortex registering hits by cosmic rays. Over the weekend it shattered the previous record of 42 days set by Cream I, another cosmic ray experiment that flew during the winter of 2004-2005....

Effect Of Invasive Plants On Species Richness Depends On Scale
2013-01-17 14:41:43

Washington University in St. Louis In Missouri forests, dense thickets of invasive honeysuckle decrease the light available to other plants, hog the attention of pollinators, and offer nutrient-stingy berries to migrating birds. They even release toxins to make it less likely native plants will germinate near them. Why, then, are recent popular science articles recommending a recalibration of the traditional no-tolerance attitude toward non-native species, suggesting that we´ve...

'BRIGHTS' Reveal Location Of Targeted Tissues
2012-11-21 10:41:38

Washington University in St. Louis Called BRIGHTs, the tiny probes described in the online issue of Advanced Materials on Nov. 15, bind to biomarkers of disease and, when swept by an infrared laser, light up to reveal their location. Tiny as they are, the probes are exquisitely engineered objects: gold nanoparticles covered with molecules called Raman reporters, in turn covered by a thin shell of gold that spontaneously forms a dodecahedron. The Raman reporters are molecules whose...

Bacterial Genes Make A Complex Logic Circuit
2012-10-13 11:27:12

The circuit is designed to act as the controller in synthetic bacteria that monitor and modify their environment By force of habit we tend to assume computers are made of silicon, but there is actually no necessary connection between the machine and the material. All that an engineer needs to do to make a computer is to find a way to build logic gates – the elementary building blocks of digital computers – in whatever material is handy. So logic gates could theoretically be...

Word of the Day
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'