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/
The science of sinkholes
Sinkholes seem to happen out of the blue, swallowing up cars, houses or even whole streets. Dr Karl gets stuck into the science of sinkholes.