AFTER more than a decade of work and $3.5 billion (e2.64bn), engineers have completed the world’s most powerful laser, capable of simulating the energy force of a hydrogen bomb and the sun itself.

A SUPERCOMPUTER that could help answer some of science’s biggest questions was unveiled yesterday.

If the American leaders are correct, more terrorist strikes against America are inevitable. What happens then?

American nuclear scientists have been ordered to produce a ‘‘bunker-busting’’ bomb designed to destroy the deepest underground hiding places, it was reported today.

A team of astronomers says it has found evidence of the period billions of years ago when starlight first began streaming through the universe.