USA, The five-year 4,5 USDbn Space Launch Initiative program is undergoing heavy cuts. The X-33 and X-34 rocket planes have been cancelled last week and a third program, the X-38 lifeboat for space station crews, poiesd for elimination. "We are only going forward with the X-37 and X-40 if they make sense under the SLI program. They have to be validated" said Sam Venneri, NASA's associate administrator...