Life
- Chemistry
Too-young caterpillars like scent of sex
Larvae respond to mate-attracting pheromones, raising evolutionary questions about what a very grown-up chemical signal could mean to them.
- Life
Team releases sequel to the human genome
ENCODE reveals the machinery that switches genes on and off.
- Humans
DNA unveils enigmatic Denisovans
Technical advances amplify the genetic record of a Stone Age humanlike population, ancestors of modern Melanesians.
- Life
Oldest mites in amber discovered
Two new species of arthropods found in 230-million-year-old fossilized resin show similarities to modern-day species.
- Life
Average bear could be pretty smart
Computer tests of solitary species reveal animals’ ability to learn concepts.
- Life
Kick in the gut may lead to IBD
Short-term infection could create conditions for long-term intestinal illness, a study suggests.
- Life
Antibiotics linked to fat buildup
Research in mice implicates changes in gut microbe mix; study in infants finds excess weight gain after use of the drugs.
- Humans
Gene may boost effects of peer pressure
DNA trait linked to tendency to be affected by high or low levels of alcohol and cigarette use in high school.
- Life
Unusual virus may tie snakes in knots
Captive snakes with a fatal disease harbor viruses never before seen in reptiles.
- Life
Mantis shrimp flub color vision test
Unexpectedly poor results on crustacean eye exams suggest there’s another way to perceive color.
- Life
Smell deals with deprivation differently
One odor-related brain region called the orbitofrontal cortex keeps the sense primed for resumed input during a cold.
- Humans
North African Diaspora written in genes
DNA analysis of people from 15 groups identifies distinct groups and migrations.
