Comment I visited the National Ignition Facility this year (Score 5, Interesting) 543
...and it's one of the most impressive scientific endeavors we've undertaken.
Yes, one of it's missions is "stockpile stewardship" -- maintaining the integrity of the United States nuclear stockpile without nuclear testing, via simulations and tests.
But it also has a goal of initiating "ignition": a sustained ("sustained" being relative, here) fusion reaction which produces more power than was put in.
Even if there is no immediate practical application, understanding various aspects of fusion, and the science it takes to get there, is critical to our energy future.
In short, like many military and national security projects, this is a truly dual-use.
The NIF just made history by firing its 192 beams to deliver more than 500 terawatts and 1.85 megajoules of energy to its target -- more than 1000 times the power the United States uses at any particular instant, and more than 100 times the power of any other laser.
We do need science like NIF, and I'm still pained by the US decision to kill the Superconducting Super Collider (SSC), what was to be the most powerful particle accelerator in the world -- significantly more so than the LHC -- after 14 miles of tunnels were dug and over $2 billion spent.
I hope this article wasn't unintentionally accurate when it called the SSC the "high water mark of American science"...(must see photos by the way).
We NEED big science.