1,698 results
- Humans
From the October 23, 1937, issue
Soviet hydroelectricity powers electric farm equipment, breeding programs create rats with cancer resistance and rabbits with an extra rib, and artificial fertilization is made to work in fruit flies.
- Neuroscience
Breaking the Barrier
A technique combining ultrasound pulses with microbubbles may help scientists move therapeutic drugs across the brain’s protective divide.
- Humans
From the October 30, 1937, issue
A photographer captures the coming of winter, motion pictures show how cancer spreads through the blood, and engineers get new oil from old Pennsylvania wells.
- Humans
Machu Picchu’s far-flung residents
A new chemical analysis of skeletons at the Inca site of Machu Picchu strengthens the idea that the royal estate was maintained by retainers who had been uprooted from homes throughout the empire.
- Humans
From the April 2, 1938, issue
The science of tall tales, a fluorine-spouting volcano under ice, and viruses show signs of life.
- Health & Medicine
Hurt-Knees Rx: Surgical method promotes ligament regeneration
A new artificial knee ligament that sparks regeneration of natural tissue could eventually make recovering from knee-repair surgery less painful and debilitating.
- Animals
Built for Speed
Animals would prove fierce competitors at the Olympics — if only they would stay in their lanes.
- Health & Medicine
New agent to spy clogged arteries
To improve the detection of harmful arterial plaques, researchers have modeled a nanoparticle on a natural material: good cholesterol.
- Chemistry
Gene dispensers
A new gene therapy technique releases genetic material from successive nanoscale layers of DNA as sheets of polyester that hold them in place slowly degrade.
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19748
I am amazed that this article concluded that “Scientists have a long way to go to explain why” prey animals play dead. As a veterinarian, I have learned that there are separate centers in the brain dealing with predatory behavior and with hunger. The effect seems to be that predatory behavior, by itself, is satisfying, […]
- Animals
Why Play Dead?
Common wisdom dictates that playing dead discourages predators, but researchers are now thinking harder about how, or whether, that strategy really works.
