Herbs and spices used to flavor food are also green alternatives to synthetic pesticides, scientists say.

An invasive vine that is choking much of the southern U.S. may reduce cravings in human alcoholics, new rat research suggests.

Sarah Palin isn't the only one who supports hunting from a helicopter. The Australian government is using choppers with heat sensors to scour the land for invasive fire ants. Video.

In a small village in northeastern Afghanistan, it's estimated more than half the residents are addicted to opium. Even the youngest of children are given the drug.Video.

In the Washington, D.C., area, acupuncture is becoming a more popular option for treating a variety of animal ailments, from arthritis and nerve damage to constipation. Video.

A seal hunter bloodies the waters, models strut the world's longest catwalk, mourners remember Hiroshima, and more in this week's best news photos.

Denture wearers take note: Science is one step closer to growing replacement teeth. For the first time an honest-to-goodness tooth has grown from stem cells in a jaw.

New genetic analysis suggests the deadly parasite mutated from a chimpanzee strain—and hints that similarly long-lasting diseases are today making the leap from animals to people.

Sure, you can live without your spleen or your appendix, but evidence is mounting that these and other "useless" vestigial organs are actually hard at work keeping you healthy.

Long thought to be harmless, SIV—the source of HIV—may lead to a lethal, AIDS-like illness in chimps, after all. Though a blow to conservationists, the discovery may hold insights for human medicine.

Vampire bats in Peru are increasingly biting people, and a National Geographic researcher is trying to find ways to stem the resulting spread of deadly rabies. Video.

Like bats and dolphins that can navigate with sound, humans can be trained to echolocate using simple clicks of their tongues, researchers show.

Some dogs can smell odors given off by humans with bladder cancer and diabetes, researchers say. In some cases, the canines warn of oncoming attacks. Video.

Work or personal stress might make you want to pull your hair out, but it's damaged DNA that actually turns it gray, according to a new study done in mice.

In Lithuania, eating crow isn't an exercise in public humiliation, as the English idiom suggests. Here, crow is literally eaten, and says one connoisseur, "it increases sexual potency." Video.