Science Update
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A genetic explanation for why some people with the HIV virus never develop symptoms, how the shape of the genome influences how genes work, and a religious practice that's shaping the evolution of a Mexican fish. Also: cloud seeding gets a failing grade, and why replacing native plants with crops accelerates climate change.
Butterflies use plant-based medicine, but only when it is needed most.
An inability to clean up cellular waste may contribute to Parkinson's disease.
Researchers have identified some genetic similarities in people who live for over 100 years.
Researchers are starting to understand why Parkinson's disease disrupts signals between the brain and muscles.
Genetics influences whether you smell a distinctive odor in your urine after eating asparagus.
Researchers have discovered how a fast-acting antidepressant works so quickly.
PSYCHOLOGY: Why listening to half of a cell phone conversation is so distracting, how we choose which hand to use, why we'll pay more if we can touch a product, and the mechanisms behind a fast-acting antidepressant.
Why you sometimes feel a cold coming on, only to have the symptoms disappear the next day.
It may be possible to detect mad cow disease by shining light into an animal's eyes.
ANIMALS: How dolphins breathe, sea snails that hide their gender, the genetics and epigenetics of ant colonies, and looking mad-cow disease in the eye.
Some people think microwave ovens and cell phones are dangerous, but their fears are not backed up by science.
A compound from cone snail saliva may be an extremely efficient painkiller.
Some drug-resistant bacteria protect weaker members of their colony.
Exercising when you're young may help your muscles bounce back later in life.
FLU SEASON: Can exercise help stave off illness? Changes to the seasonal flu vaccine, bacterial surprises, and better ways to purify water in developing countries. Also: did life originate between mica sheets?
Researchers are developing a highly accurate screening test for ovarian cancer.
ANIMALS: A new way to sample dolphin DNA, pain-relief from sea snail venom, beetles born with bifocals, and why pigeons bob their heads when they walk.
Smoking alters the expression of over 300 genes.
Scientists have generated fully functional, natural replacement joints in rabbits.
The risk of a heart attack increases as temperatures go down.
