From the ground breaking and life saving to the wacky and implausible, Dr Karl Kruszelnicki reveals some of the best moments in science.
http://www.abc.net.au/radionational/programs/greatmomentsinscience/
What to know about sunscreens
Australia is very sunny, and because of that it's a skin cancer hotspot. UV light triggers skin cancer but sunscreen blocks UV light—so is it better to apply more? Not really—and do not mix your sunscreens because there are two different types.