Fred posted a video earlier this week on his blog of two base jumpers leaping off the Freedom Tower in New York. That is terrifying enough, especially if you don't like heights. Now there's another of people doing dangerous stuff, this one coming from South Africa. In the new sport of train surfing, surfers climb and hang all over moving commuter trains and even dance on the roofs of the cars. South African authorities have tried to curb the thrill sport, but it still thrives in the townships around Johannesburg. Italian photographer Marco Casino made a short film about these amazing and crazy train surfers.