2,657 results
- Health & Medicine
Wrong Way: HIV vaccine hinders immunity in mice
An HIV vaccine hurts, not helps, the immune systems of mice, say scientists.
- Humans
From the June 26, 1937, issue
Fur fashions from Ethiopian monkeys, the Big Bang as the source of cosmic rays, and ensuring airline pilots get enough oxygen.
- Health & Medicine
Nerves are key to longevity effect
The life-extending effect that some animals get from calorie-restricted diets may depend on signals from the brain.
-
Restricting calories keeps immune system young
Drastic limits on calorie consumption starting early in a monkey’s life seemed to delay aging of the animal’s immune systems in new research. Numerous studies have found that calorie restriction can extend the life span of organisms such as yeast, worms, fruit flies, and mice. However, scientists don’t know how caloric restriction lengthens life. Janko […]
-
Spying Vision Cells: Eye’s motion detectors are finally found
Primates, like other mammals, possess specialized retinal cells that detect motion.
-
Well-Tooled Primates
People may have leaned on ancient primate-brain capacities to begin making stone tools by 2.5 million years ago, a transition that possibly spurred the development of language and other higher mental faculties.
- Humans
From the July 10, 1937, issue
Photographing the earliest developmental stages of opossum eggs, a 'heavy electron' in cosmic rays, and teaching chimpanzees to use sign language.
-
Fly Moves: Insects buzz about in organized abandon
Fruit flies display a penchant for spontaneous behavior that represents an evolutionary building block of voluntary choice, also known as free will, a controversial study suggests.
- Health & Medicine
Infectious Obesity: Adenovirus fattens stem cells
Some cases of obesity may result from infection by a virus that can transform adult stem cells into fat-storing cells.
-
-
Copycat Monkeys: Macaque babies ape adults’ facial feats
Scientists for the first time have established that baby monkeys, shortly after birth, imitate facial movements made by people and adult monkeys.
-
From the October 16, 1937, issue
Biological prospecting on two remote mesas near the Grand Canyon, a newly described and widespread form of meningitis, and primate fossils from the Crazy Mountains of Montana.
