With COVID we've focused on vaccines and masks but there is more we can do, and the situation parallels a public health revolution from the mid-1800s.

If you're a modern human you likely carry a bit of tech on you to track how physically active you are. But how can we be sure it's really promoting activity?

Telomeres are small 'caps' on the ends of your chromosomes—the length of telomeres is seen as an indicator of how fast we age. How accurate could they be?

Hosts: Tegan Taylor and Dr Norman Swan