Humans
We summarize the week's scientific breakthroughs every Thursday.
- Health & Medicine
Gene might contribute to asthma risk
Variations in a gene called ADAM33 may predispose a person to asthma.
- Health & Medicine
Hormone therapy falls out of favor
Several studies now indicate that health risks associated with hormone replacement therapy for postmenopausal women outweigh its benefits.
- Archaeology
Ancient 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.
- Archaeology
The Original Cocoa Treat: Chemistry pushes back first use of the drink
Analysis of residues from ancient Maya vessels has revealed that the pots held cocoa almost 1,000 years before its previously known earliest use.
- Health & Medicine
Sleepy Heads: Low fuel may drive brain’s need to sleep
A new study supports the hypothesis that dwindling energy stores in the waking brain induce sleep.
- Health & Medicine
Mixed Blessing: Unusual gene helps heart, hurts immunity
People carrying a variant of a gene that encodes an immune protein called toll-like receptor 4 have a weaker defense against infections but appear to be less prone to heart disease.
- Health & Medicine
More than Skin Deep? Beauty products may damage fetal development
A new report shows that many cosmetics contain phthalates—a class of chemicals known to cause developmental deformities in animals.
- Health & Medicine
Disabled Defense: HIV protein counters immune-cell gene
Immune cells contain a protein that can inhibit HIV replication if the AIDS virus lacks a key protein.
- Health & Medicine
Gender differences in weight loss
Men and women gain weight differently and may lose it differently, too.
- Health & Medicine
Antioxidants for greyhounds? Not a good bet
Antioxidant vitamins that greyhound racers have been giving their animals to boost performance actually slow down the dogs.
- Health & Medicine
Study fails to link vasectomy to cancer
Researchers have found that men with prostate cancer are no more likely to have had a vasectomy than healthy men are.
- Health & Medicine
Method could boost diabetes therapy
Allowing insulin-producing islets to grow in close contact with each other during cell culture may increase the chance of successful transplant into diabetic people.
