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Dr Karl Video
Dr Karl Kruszelnicki (Aussie Aussie Aussie oi oi oi)
Everyone should plant trees!
Hey, let's talk about food! What is your most liked?
Littoral rainforest in Cronulla - fascinating
Very interesting historic wrecks
Maps are soo interesting
The great pacific garbage patch
Tardigrades, what a mystery
The wonderful world of plankton
Cooking: the chemistry of your kitchen