WASHINGTON -- The IRS will lay off thousands of probationary workers in the middle of tax season, according to two sources familiar with the agency's plans, and cuts could happen as soon as next week.

ICBM silos in the Midwest or submarine bases along the coasts might bear the most immediate and severe consequences of a nuclear attack, there's no question: Any nuclear war or weapons detonation ...

The aim of the present work was to study liver changes induced by chronic exposure of laying hens to aflatoxin B 1 (AFB ), in view of the paucity of information on the effects of the purified toxin.