bacteria

The smooth, rosy trunk of a cherry tree is marked with big, oozing dead areas, called cankers.
George Sundin / Michigan State University

Bacterial canker is a devastating tree disease that affects sweet cherry orchards around the country. There is currently no good way to treat it, but some Michigan scientists are trying to harness bacteria-killing viruses to control it.

What happens if your dog likes to swim in the lake, but there might be toxins in the water?

It can happen in a local lake or somewhere like the western basin of Lake Erie. Toxin-producing cyanobacteria appear. Some people still call it blue-green algae.

Water filters that you attach to your faucet are known to be good for filtering out heavy metals like lead and disinfectants like chlorine. But they’re not designed to filter out bacteria that can grow in the filter itself.