Australia's summer UV levels are high enough to cause sunburn in as little as 11 minutes.

Yet the summer sun in the Northern Hemisphere rarely feels that full on.

So why does our sunlight have that extra "bite"?

Spoiler: it's not the hole in the ozone layer.

Learn more on Lab Notes, the show that brings you the science of new discoveries and current events.

Get in touch with us: labnotes@abc.net.au