Searching for ways to improve the nutritional quality of leafy green vegetables, Lithuanian researchers have found success with new technology that features high-density photosynthetic photon flux generated by a solid-state illuminator.

Consumers worried about salad safety soon may be able to buy fresh spinach and iceberg lettuce zapped with just enough radiation to kill E. coli and a few other germs. The Food and Drug Administration will issue a new regulation today allowing spinach and lettuce sellers to take that step.

By LAURAN NEERGAARD Farms and processors still must follow standard rules for cleanliness. WASHINGTON -- Consumers worried about salad safety may soon be able to buy fresh spinach and iceberg lettuce zapped with just enough radiation to kill E. coli and a few other germs.

By Lauran Neergaard WASHINGTON - Consumers worried about salad safety might soon be able to buy fresh spinach and iceberg lettuce zapped with just enough radiation to kill E. coli and a few other germs.

By Lauran Neergaard WASHINGTON - Consumers worried about salad safety may soon be able to buy fresh spinach and iceberg lettuce zapped with just enough radiation to kill E. coli and a few other germs.