Health & Safety

There's a new fear from climate change: bacteria and viruses buried in frozen ground coming back to life as the Arctic warms up. We went digging in permafrost to find out how worried we should be.

The rate of hospitalizations due to influenza is continuing to rise. Now, a study finds the risk of having a heart attack also spikes in the days after a confirmed diagnosis of flu.

Just what exactly is permafrost? And what is happening now that it's warming up? To find out, we enter the Arctic Circle's secret world of ice and frozen history.

A team of researchers has produced two macaque monkey clones using a technique called somatic cell nuclear transfer. It's a first for primates. The advance could hasten research into human diseases.