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After the health secretary promoted vitamin A as a cure, parents in West Texas began giving their children high doses, sometimes to prevent infection.

While not sparing the lives of ducks and geese, the technique lets the birds eat and grow normally.

Frozen fuel from the Falcon 9 rocket launched Monday created a luminous display for several minutes, and was seen by people from England to Eastern Europe.

The Cactus to Clouds ascent just outside Palm Springs, Calif., is grueling, but natural treasures, and a speedy trip down, await anyone who is up to the challenge.

Mushrooms in 19th-century watercolors: The paintings of a self-taught female mycologist are featured at the New York State Museum.

The Supreme Court declined to hear an appeal in the long-running case, known as Juliana, which helped spawn legal strategies widely adapted to other lawsuits.

Currently the agency's acting director, Dr. Monarez would be the first nonphysician to head the agency in more than 50 years.

The F.D.A. approved an artificial vessel to restore blood flow in patients, despite its own scientists flagging questionable study results and potentially fatal ruptures of the product.

Paleontologists hope that an amber-like material, made with living tree resin, will shed light on the prehistoric fossilization of the real stuff.

Recovering missing animals requires understanding both animal and human behavior.