Most people I know aren’t content with nothing but vegetables, said Morris Benjaminson, a researcher at Touro College Applied Bioscience Research Consortium in Bay Shore, N.Y. “They like meat and they like meat to taste good. So I came up with the idea of raising muscle in a growth chamber.” Benjaminson and his team managed to make slices of fish muscle grow bigger in a nutrient solution. Soon he hopes to try the technique to grow chicken and beef. One of the challenges in launching a possible manned mission to Mars will be in supplying the travelers with an adequate and diverse supply of food for the estimated two-year voyage. Packing all food supplies will be impractical since NASA estimates it now costs about $10,000 a pound to send material into low Earth orbit and many times that to send any kind of material to Mars. That means astronauts will need to grow much of their food