1.   Among the ideas presented were the use of super-powerful spacecraft and well-timed nuclear explosives to pulverize potential invaders from outer space or nudge them away from their Earth-bound orbits.

2.   A train loaded with nuclear explosives comes between Lowe and his family.

3.   Chapman said Thursday that nuclear explosives would probably be needed for the job, but other scientists disagreed.

4.   Consider the Al Qaeda documents describing how to make poison gas, germ warfare, and on how to make nuclear explosives.

5.   Much more deadly, and more difficult to obtain, would be nuclear explosives based on uranium or plutonium.

6.   Unlike nuclear explosives, the potential sources of radiological material are vast and largely unsecured.

7.   White House officials have argued that this would weaken his ability to persuade Pakistan and India not to conduct more testing of nuclear explosives.

8.   He noted that Russia and other declared nuclear powers, including the United States, already have stopped producing nuclear explosives.

9.   Some researchers have proposed sending a rocket carrying a nuclear explosive to nudge a dangerous asteroid into a safer orbit.

10.   The day may not be far off when groups of outlaws and terrorists will come into possession of-or manufacture-some crude nuclear explosives.