Caffeine helps quickly boost wakefulness following general anesthesia, a new study finds. The stimulant — used daily by more than 90 percent of adults in the U.S. — appears to alter physiological function in two different ways to shorten recovery time.
Статті
Blossoming Bisexual: World's 1st Flower Had Male and Female Parts
When the world's first flower sprouted about 140 million years ago, it was bisexual, possessing both male and female reproductive parts, according to the researchers who virtually reconstructed the blossom in a new study.
Missing signals lead to diabetic nerve injury
Molecules that help cells communicate with each other -- called cytokines -- might be the key to repairing diabetic nerve damage. Diabetes devastates nerve cells, which can lead to poor circulation, muscle weakness, blindness, and other painful side effects. The new study showed diabetic mice can't repair nerve cells after damage due to low levels of specific cytokines.
Poor appetite and food intake in older adults
Strategies to improve our appetites as we age include reducing portion size, increasing meal frequency, and using flavor enhancers. Until recently, however, these options have not proven to improve food intake or quality of life for older people. That's part of the reason why a team of researchers designed a study to examine the differences in food intake among older adults with varied appetite levels.
In Photos: Rare Conjoined Bats
These conjoined bats from Brazil are only the third set of conjoined bat twins to be recorded in the scientific literature.
Jet Lightning! Rarely Seen 'Gigantic Jets' Spotted by Cloud Cam (Video)
A spectacular outburst of jet lightning, also known as "gigantic jets," was captured by the Gemini Observatory’s cloud camera on Mauna Kea in Hawaii on July 24, 2017.
Investigators use light to kill microbial 'vampires'
Staphylococcus aureus (staph) is the leading cause of hospital-acquired infections. Antibiotic-resistant strains of the bug, like MRSA, can kill. If S. aureus is going to drink our blood like a vampire, let's kill it with sunlight, suggests new research.
Engineers produce long lasting, energy density battery
A new generation of manganese dioxide-zinc batteries with unprecedented cycle life and energy density has now been revealed by scientists. The discovery has made the common household battery suitable for large grid storage applications.