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ChemistryMaterial could halt catalyst waste
New research suggests a way that carmakers might use less of expensive metal materials in automobiles' catalytic converters.
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Health & MedicineHormone therapy falls out of favor
Several studies now indicate that health risks associated with hormone replacement therapy for postmenopausal women outweigh its benefits.
By Nathan Seppa -
ArchaeologyAncient site yields a copper whopper
Excavations in Jordan revealed the largest known Early Bronze Age metal-production facility, where workers crafted high-quality copper tools and ingots beginning around 4,700 years ago.
By Bruce Bower -
19022
All of the characteristics the researchers ascribe to sexual abusers–hostile masculinity, penchant for impersonal assembly-line sex, sexual preoccupation, emotional callousness, attention-deficit hyperactivity disorder–prevent them from forming enduring emotionally intimate attachments.