I won't predict the markets, but here's what I predict they will find on Mars: radiation decayed DNA and cell fragments. The scientifically illiterate media will initially claim that life has been discovered on Mars. Then everyone will remember that astronomers have calculated that a percent or two of all projectile material thrown from the earth in past asteroid/comet/meteor collisions will end up on Mars. And then they'll be in a quandary because the DNA fragments sure seem to match those on earth...
