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Like a pit bull, piranhas will tear the flesh from your bones. Also like a pit bull, they bark

Hopes for new Alzheimer's drugs that would slow or stop the disease's inexorable decline have repeatedly foundered in recent years. Large pharmaceutical companies, which have pushed ahead with drugs that stop the buildup of toxic proteins that damage and kill brain cells, have reported a recurring string of bad news.

As many as 35 million people worldwide have Alzheimer's disease, the most common form of dementia among adults over 60 years of age. That figure could reach 115 million by 2050 , concludes the nonprofit Alzheimer's Disease International .

As many as 35 million people worldwide have Alzheimer's disease, the most common form of dementia among adults over 60 years of age.

By Lauren Gravitz of Nature magazine One can't squeeze blood from a turnip, but new research suggests that a bit of transgenic tweaking may make it possible to squeeze blood--or at least blood protein--from a grain of rice.

By Lauren Gravitz of Nature magazine One can't squeeze blood from a turnip, but new research suggests that a bit of transgenic tweaking may make it possible to squeeze blood--or at least blood protein--from a grain of rice. [More]

WAYCROSS, Ga.--Pawn shops, diners, churches and pine trees. Hundreds of thousands of pine trees.

WAYCROSS, Ga.--Pawn shops, diners, churches and pine trees. Hundreds of thousands of pine trees. [More]

After being tossed about and damaged by the tsunami that devastated northeastern Japan on March 11, Japan's drilling ship the Chikyu has been given an especially fitting assignment: to drill into the fault zone and take temperature measurements near the epicentre of the magnitude-9.0 Tohoku earthquake that caused the tsunami. It will be the first time that researchers have drilled into an underwater fault soon after a quake. The aim of the exercise is to solve a decades-old mystery about the part that friction plays in such an event

After being tossed about and damaged by the tsunami that devastated northeastern Japan on March 11, Japan's drilling ship the Chikyu has been given an especially fitting assignment: to drill into the fault zone and take temperature measurements near the epicentre of the magnitude-9.0 Tohoku earthquake that caused the tsunami. It will be the first time that researchers have drilled into an underwater fault soon after a quake.

Anxiety around children's eating habits often peaks during sweets-laden holidays like Halloween, but the factors that contribute to excess weight in kids extend well beyond special occasions. Most children who are obese--now 17 percent in the U.S.--will carry that extra heft into adulthood, along with the long-term health consequences

Anxiety around children's eating habits often peaks during sweets-laden holidays like Halloween, but the factors that contribute to excess weight in kids extend well beyond special occasions. Most children who are obese--now 17 percent in the U.S.--will carry that extra heft into adulthood, along with the long-term health consequences

It’s time to get scared.

It’s time to get scared. Nightmare On Elm Street, Psycho, Texas Chainsaw Massacre will be airing on TVs through to midnight tonight, Halloween.

In 2009, researchers from the biotechnology company Oxitec released over 18,000 genetically modified mosquitoes in a bid to reduce the wild mosquito population. The mosquitoes were designed so that in theory, when these modified male mosquitoes mate with wild females, the offspring would be infertile .