TORONTO, May 5 /PRNewswire/ - Fifty years ago most people believed concrete was strong enough to withstand an atomic blast. Today, we know that isn't the case. Concrete grease interceptors, installed on-site at most restaurants, corrode, crack, leak and need replacing every 5-10 years.

A number of top U.S-based physicists have concluded that the Bush administration used inaccurate claims to reassure NATO allies about U.S. missile defense plans in Eastern Europe.

WASHINGTON (Reuters) - A test of key parts of an emerging U.S. anti-missile shield was scrubbed on Thursday because of bad weather in Kodiak, Alaska, where a target missile was to have been launched, the Defense Department said.

WASHINGTON - The military is in the final stages of readying its national ballistic missile defense system, with officials predicting it will be activated before year's end. But several questions remain, including how well the experimental missile interceptors work.