News
- Health & Medicine
HIV variant might help vaccine search
Scientists have discovered an unusual HIV protein in a Kenyan woman that makes the virus vulnerable to antibodies.
- Earth
Switchgrass may yield biofuel bounty
Making ethanol from switchgrass yielded more than 5 times more energy than needed to grow the crops in a large-scale farming trial.
- Health & Medicine
Sleep disruption and glucose processing
Shallow sleep can depress the body's ability to process glucose efficiently.
- Animals
Butterfly’s clock linked to compass
The most detailed look yet at the monarch butterfly's daily rhythm keeper suggests it's closer to ancient forms than to the fruit fly's or mouse's inner clock.
