News
- Health & Medicine
Patch guards against Montezuma’s revenge
A patch worn on the skin delivers a vaccine against a form of Escherichia coli that causes traveler's diarrhea.
- Health & Medicine
Additives may make youngsters hyper
Common food colorings and the preservative sodium benzoate have the potential to foster hyperactivity and inattentiveness in children, a new study finds.
- Chemistry
Hydrogen makers
A new bioreactor produces hydrogen hundreds of times as fast as previous prototypes.
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ADHD kids show slower brain growth
A new brain-scan investigation indicates that attention-deficit hyperactivity disorder involves substantial delays in children's brain development.
