Uncategorized
- Astronomy
A Meteoroid Hits the Moon
This NASA Web page describes observations of a recent meteoroid impact on the moon, which created a new crater. It includes audio and a remarkable video of the impact. Go to: http://science.nasa.gov/headlines/y2006/13jun_lunarsporadic.htm?list43643
-
19710
I live in Northern California, where forest-biomass power plants are common. One power plant takes the ashes that result and places them where cows forage. I’m wondering to what level of concentration this process will accumulate the cesium in organic dairy products. Jesse NoellEureka, Calif. The amount of radioactive cesium-137 taken up by trees is […]
- Earth
Radiation Redux: Forest fires remobilize fallout from bomb tests
A sensor installed to monitor fallout from modern nuclear tests has detected small amounts of radioactive cesium produced by bomb tests decades ago and sent skyward by forest fires.
- Health & Medicine
Keep on Going: Busy seniors live longer, more proof that it pays to stay active
Healthy elderly people who burn a lot of calories each day may be gaining extra years of life.
-
19709
I was surprised to see in Science News, conclusions about causation made on the basis of correlational research. The variance in activity levels may have been a consequence of differing levels of energy among the participants at the outset of the study, perhaps due to differences in general health. We should be careful about this […]
- Anthropology
Little Ancestor, Big Debate: Tiny islanders’ identity sparks dispute
New measurements bolster the 2-year-old claim that fossils of a half-size human ancestor found on an Indonesian island represent a new species.
- Tech
Farm-Fuel Feedback: Soybeans have advantages over corn
A new analysis of two biofuels finds that while both provide more energy than they consume, soybean biodiesel gives more bang for the buck than ethanol made from corn.
- Animals
Live Prey for Dummies: Meerkats coach pups on hunting
Meerkats easing their pups into the job of handling live prey are among the few animal species shown so far to be natural teachers. With audio.
-
19708
On this article, real cats do this too. I have observed many adult cats teaching kittens (not necessarily theirs) to hunt. People who receive “presents” from their cats are not being gifted. The cats are trying to teach them how to hunt, but the cats probably think we are pretty dumb. Emily JohnstonWestminster, Md.
- Astronomy
Explosive Aftermath: Sluggish neutron star puzzles astronomers
An X-ray–emitting object at the heart of a young supernova remnant doesn't fit the textbook view of what a stellar explosion is supposed to leave behind.
- Humans
Close Your Books: Cuts, shutdowns loom for EPA libraries
Some regional libraries maintained by the Environmental Protection Agency will permanently shut their doors because of a proposed cut to their funding.
- Health & Medicine
In utero factors shape responses to stress, sugar
Abnormal conditions during pregnancy can lead in unexpected ways to physiological problems in children once they reach adulthood.
