Really, the space program? That's been dead as a doornail since 1969. The last space shuttle mission will be in a few months, but I don't think the obesity epidemic will be over by then.
The point of my post is that much of the public health information in this area is based on shoddy science. I didn't say that Diet Coke is a direct cause of obesity, but there are plausible mechanisms
whereby it might facilitate weight gain.
If they tax Coke, you can bet they won't tax juice or Gatorade which are more or less the same thing as Coke nutritionally.
This entire area has been driven by extremely poor science, see Gary Taubes, Good Calories, Bad Calories. So, I don't trust the government to make the correct choices here. Ever heard of unintended consequences?