Nasa developing Soylent Green

"Fancy a beefburger, but want to spare the cow? Tissue engineers experimenting with ways of growing meat in a lab dish could soon provide a solution.
The aim of the work is to develop food for astronauts on long space journeys, such as a mission to Mars. But like much other space research, what happens up there could one day become commonplace down here too - just look what happened to Velcro."