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Now that recreational use of marijuana is legal in four states, law enforcement officials are looking for quicker ways to test drivers for excessive pot use. Entrepreneurs are taking on the challenge.

Studies suggest that smoking heavily in adolescence may affect brain function in adulthood, but there's a dearth of hard evidence for voters contemplating pot's long-term effects.

Dewayne "Lee" Johnson, 46, says the company's Roundup weedkiller caused his illness. He will accept the award after a judge reduced a jury's original figure of $289 million.

Earthworms are a source of protein, calcium and much more. But they may not be the top option for feeding a hungry world.

Blood alcohol levels match well with a person's impairment. But the THC in marijuana doesn't move around the body the same way, so blood tests can miss people who are stoned.

The two early states suck up a lot of the attention, but their track records at picking presidents are spotty at best. That doesn't mean they don't matter, though.

In January, one man died and four others sustained brain injuries in the early clinical test of an experimental pain drug. Independent scientists reviewed the study to learn what went wrong.

Those tangled brambles are everywhere in the city, the legacy of an eccentric named Luther Burbank whose breeding experiments with crops can still be found on many American dinner plates.

Last year, Americans logged more than 3.1 trillion miles and 35,092 people died on the nation's roadways. Now, there's a plan to eliminate traffic fatalities within 30 years.

In his new book, statistician Ben Blatt loads thousands of books, new and old, into a vast database and uncovers intriguing patterns in how our favorite authors write.