Deborah Netburn

While the virus is no less contagious than it was 3 months ago, businesses and health care facilities are more prepared.

A small planet, just a bit bigger than Earth, has been spotted in our stellar neighborhood, just 39 light-years away.

Do you dream of living on Mars? Then turn on your webcam. You've got an application video to make.

NASA scientists this week published a study reporting that the ozone layer over the Arctic fell to unprecedentedly low levels over the winter and spring of 2011.