Uncategorized
- Tech
New nanosize detector picks through DNA
Researchers have made a device that can differentiate nearly identical DNA molecules, which might lead to sequencing at unprecedented speeds.
- Anthropology
Fossil Skull Diversifies Family Tree
A 3.5-million-year-old skull found in Kenya represents a group of species in the human evolutionary family that evolved separately from australopithecines such as Lucy's kind in Ethiopia.
- Earth
A quick recovery after dinosaur deaths
Evidence from 65-million-year-old sediments suggests that a single impact from space wiped out the dinosaurs and that ecosystems recovered from the trauma in only a few thousand years.
- Earth
New analysis rejuvenates Himalayas
The Asian mountain range that includes some of the tallest peaks in the world turns out to be about 15 million years younger than geologists previously thought.
-
18912
As I recall, the Germans tried using diesels to power aircraft, but because diesels were not as responsive as gasoline-powered engines and heavier, they did not progress. That, it seems, was very fortuitous, given this surprising discovery that diesel-exhaust pollution increases with increased altitude. Anibal José da Silva Houston, Texas
- Earth
Diesels: NO rises with altitude
The combustion chemistry of heavy-duty diesel trucks changes with altitude.
- Earth
Passive smoking’s carcinogenic traces
Researchers isolated markers of a cigarette-generated carcinogen in urine of nonsmoking women married to smokers.
- Health & Medicine
Fatty plaques are unstable in vessels
Fatty plaques that form on the inside of blood vessels are less stable and hence more prone to rupture than are hard, calcified plaques.
- Health & Medicine
Parkinson’s implants survive in brain
Human embryonic stem cells transplanted into the brains of people with Parkinson's disease survive and grow better in patients under 60 years of age than in older patients.
- Astronomy
Creating a warmer, wetter Mars
A new study adds to the evidence that past volcanic activity could have temporarily created a warmer, wetter Mars, a place on which water once flowed freely.
-
Things That Go Thump
There's a whole world of animal communication by vibration that researchers are now exploring.
-
From the March 21, 1931 issue
MUSHROOMS SUDDEN GROWTH FOLLOWS LONG PREPARATION Quick as a mushrooms growth, is the phrase we like to apply to sudden and unexpected developments. An oil town, a stock-market fortune, the reputation of the writer of a hit, are all referred to the mushroom standard of comparison. Yet the mushroom is no creature of magic, not-here […]
