Day-of-week Dependence of Aerosol Concentrations at Rural and Urban EPA Monitoring Sites May 13, 2007 —
Local concentrations of particulate matter smaller than 10 microns, referred to as "PM10", are measured each day at many Environmental Protection Agency (EPA) sites around the country. The image shows for each . . . [continued]
Unusual Spring Weather in Europe Foils Yacht Race May 6, 2007 —
What does a $10 million racing yacht do when there is no wind? The picture above says it all. The America's Cup is the oldest trophy in professional sport, and the first round of competition leading up to the America's Cup competition got underway in Va . . . [continued]
