Humans
We summarize the week's scientific breakthroughs every Thursday.
- Earth
Low sperm counts linked to fetal effects
Low male fertility may partly stem from chemical exposures in utero, an anatomical study suggests.
- Health & Medicine
Body & Brain
Ibuprofen may help fend off Parkinson’s, plus bone boosters and smokers’ brains in this week’s news.
- Life
Good gene type for cancer bad for stroke
A DNA variant that helps prevent tumors may diminish the brain’s recovery after an interruption in blood supply.
- Humans
Smelling a rat in a bag of chips
A forensic scientist shares tales from a very special victims unit.
- Health & Medicine
Half of adult males carry HPV
Human papillomavirus, a sexually transmitted pathogen that can cause cancer, shows up often in men and lingers for months, a study shows.
- Earth
PCBs may impair fertility
A study of women undergoing in vitro fertilization finds reduced embryo implantation among women with higher levels of one type of the banned chemicals.
- Health & Medicine
How brains guesstimate
Experiments show how the human mind lowballs moving objects’ speed when information is lacking.
- Psychology
Club drug tied to out-of-body sensations
A Canadian survey finds a close link between ketamine and bizarre physical experiences.
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- Humans
U.S. probably began global fire ant spread
A genetic study shows that recent international invasions likely originated in the U.S. South, not the species’ native South American range.
- Health & Medicine
Memories Can’t Wait
Researchers rethink the role of amyloid in causing Alzheimer’s
- Chemistry
Mad cow-type diseases lie in wait
Prion infections build quickly in the brain then pause before killing, new research suggests.
