Burmese pythons are killing off mammals that would normally keep Florida's rat population in check. A new study found that parts of the Florida Everglades were becoming overrun with rats as a result.

Add Yahoo as a preferred source to see more of our stories on Google. An outbreak of hantavirus on a luxury cruise ship has grabbed worldwide attention. Three people have died and eight cases of the ...

An outbreak of hantavirus on a luxury cruise ship has grabbed worldwide attention. Three people have died and eight cases of the virus were confirmed on the ship as of May 6. If hantavirus sounds ...