Uncategorized
- Ecosystems
Shark Serengeti: Ocean predators have diversity hot spots
The first search for oceanic spots of exceptional diversity in predators has turned up marine versions of the teeming Serengeti plains.
- Anthropology
New World Newcomers: Men’s DNA supports recent settlement of the Americas
New data on genetic differences among the Y chromosomes of Asian and Native American men support the notion that people first reached the Americas less than 20,000 years ago.
- Paleontology
Three Species No Moa? Fossil DNA analysis yields surprise
Analyses of genetic material from the fossils of large flightless birds called moas suggest that three types of the extinct birds may not be separate species after all.
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19266
In your article, you state that the cloned foal Prometea is a genetic twin of her birth mother which contributed the nuclear DNA. This is not true, as twins have identical nuclear and mitochondrial genes. The cytoplasm of the cloned foal was obtained from a slaughtered horse. The cytoplasm, and therefore the mitochondrial genes, of […]
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Winning Bet: Horse and mule clones cross the finish line
Scientists have for the first time cloned a mule and a horse.
- Health & Medicine
Virus Shield: Ebola vaccine works fast in monkey test
Tests on monkeys show that an experimental vaccine can build immunity against Ebola virus within a month, suggesting the vaccine might help contain outbreaks of the deadly pathogen.
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19335
I have a real problem with the way that the so-called robot-designed robot is described in this article. I used to do large-scale manufacturing automation, and I consider what is being done a parlor trick. There are only two things that could be called “robotic” in the system: The computer-aided manufacturing machinery that built the […]
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19265
Regarding this article, the challenge is how to increase the anomalous risk perceptions of white males. Their low risk perception may lead to higher use of cigarettes and other addictive drugs, lower use of condoms to prevent sexually transmitted diseases, driving at unsafe speeds and while intoxicated, poor eating practices, higher use of guns, and […]
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19334
In your article about the use of kites for science, we are told that Antarctica is “[m]ore than half a world away from Kansas.” I know a shorter route. It’s a round, round world, after all! Marvin E. Kahn Darnestown, Md.
- Earth
Large lake floods scoured New Zealand
A volcanic region of New Zealand’s North Island experienced immense floods and severe erosion when lakes filling the craters of dormant volcanoes burst through the craters' rims and poured down the slopes.
- Paleontology
A human migration fueled by dung?
When people made their way from Asia to the Americas, the path they took may have been covered in dung.
- Earth
For European lakes, how clean is clean enough?
New research on lakes in Denmark suggests that agriculture has been affecting water quality there for more than 5,000 years.
