AP - A slice of cool, fresh watermelon is a juicy way to top off a Fourth of July cookout and one that researchers say has effects similar to Viagra — but don't necessarily expect it to keep the fireworks all night long.

AP - Adding to tomato confusion, the government is about to start testing numerous other types of fresh produce in the hunt for the source of the nation's record salmonella outbreak — even as it insists tomatoes remain the leading suspect.

AP - Danish health officials fear more than 4,000 people may be infected with salmonella and are checking everything from refrigerators to credit card receipts to find the source of what may be the worst outbreak in 15 years.

Reuters - Just four factors can predict with 70 percent accuracy whether a woman will become pregnant through "test-tube" baby technology known as in vitro fertilization, U.S. researchers said on Tuesday.

AP - Adding to tomato confusion, the government is about to start testing numerous other types of fresh produce in the hunt for the source of the nation's record salmonella outbreak — even as it insists tomatoes remain the leading suspect.