Is There a Zeta Scale Supercomputer?

Bob Greene predicts a Zeta scale supercomputer with 10 to the 21 flops, that's a six trillion calculations per second. It could people predict that it will be able to do things like accurately forecast the global weather for two weeks in the future. "I think we're going to see some amazing stuff with Zeta scale and Yada scale supercomputers," he says.