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Teen's broken heart mends--literally--after grafted heart is removed

Fourteen years after a risky operation to save the life of an infant suffering heart failure, a team of U.K. doctors is claiming success. Hannah Clark (now aged 16)—who as a baby had a donor heart grafted onto her own—has made a full recovery, three years after the transplanted organ was removed, the doctors claim in an article published online today by The Lancet ...

July 14, 2009 — Larry Greenemeier

Manipulative meow: Cats learn to vocalize a particular sound to train their human companions

Although perhaps not as jolting as an alarm clock, a cat’s “soliciting purr” can still pry its owner from sleep. And, when sufficiently annoying, the sound may actually coerce them from bed to fill a food bowl. 

This particular meow mix—an embedding of her cat’s high-frequency natural cry within a more pleasant, low-frequency purr—often awakens Karen McComb, a behavioral ecologist at the University of Sussex in the U.K...

July 13, 2009 — Lynne Peeples

After two weather-scrubbed weekend attempts, NASA tries again for shuttle launch

NASA will make a fifth try at launching space shuttle Endeavour this evening, after storms twice delayed attempts over the weekend. The shuttle's mission to the International Space Station (ISS) was originally slated to begin in June but was twice postponed that month due to leaks in a venting system that carries hydrogen gas away from the launch pad...

July 13, 2009 — John Matson

Rhino poaching approaches 15-year high

High demand from Asia has driving rhino poaching to its highest level in more than a decade, according to a new report (PDF) by the by WWF, the International Union for the Conservation of Nature (IUCN) and Traffic...

July 13, 2009 — John Platt

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