US beaches laden with sewage, bacteria: study

US beaches can be dirty places, making about 3.5 million people sick each year from sewage in the water, said an annual study Wednesday that rates American beaches by how dirty they are.

Raw sewage: Home to millions of undescribed viruses

Biologists have described only a few thousand different viruses so far, but a new study reveals a vast world of unseen viral diversity that exists right under our noses. A paper to be published Tuesday, October 4 in the online ...