[concrete is my business]

I have visited NASA and it is very exciting and interesting.

However, aside from communications and military benefits I have never understood the economics and have always thought it is a financial boondoggle.

I think exploring the earths oceans has more interest and more promises of results.

[RightWhale]

How is the cost of concrete going to be affected by the run-up of the cost of natural gas and oil? Is that a significant part of the cost?