"microbes"

The French disease fighter had a healthy fear of microbes. So does a new report, which worries that humankind might not be ready to fight off the next pandemic.

It is possible that Mars still has microbes scraping out a living in its nooks and crannies. Astrophysicist Adam Frank asks: What are our responsibilities to that life, if it exists?

Researchers find that babies lacking four types of bacteria in their guts at 3 months appear to have a higher risk for developing asthma later in life.

Near a field of deep sea vents between Norway and Greenland, scientists discovered the DNA of microbes that seem to be primitive archaea, but with a lot more genes — typical of complicated creatures.