Uncategorized
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Cells in bloodstream don’t refill ovaries
Contrary to a report published last year, cells that circulate in a female mammal's blood don't seem to restock its egg supplies.
- Astronomy
Galactic de Gustibus
About 13 billion years after its birth, our galaxy is still packing on the stars.
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19699
Please check the picture in this article. The teeth shown are lower teeth. Theodore BlinderHavertown, Pa. The story and caption misidentified the teeth that had been filed down 4,300 years ago. They were the bottom-front teeth, shown at left in the photo. —B. Bower
- Anthropology
Mexican find reveals ancient dental work
A 4,500-year-old human skeleton found in Mexico represents the earliest instance in the Americas of intentionally modified teeth, apparently to create space for a ceremonial mouthpiece.
- Tech
Pumping Alloy
A new way to power artificial muscles improves the prospects for making lifelike humanoid robots and prosthetic limbs.
- Health & Medicine
A Vexing Enigma
While no drug or lab test is approved to treat or diagnose chronic fatigue syndrome, new research into the biology of the disorder may begin to shed light on the problem.
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19698
Your article implies that there’s not an available cure for chronic fatigue syndrome. I was amazed to find no mention of vitamin B12. I can attest to the remarkable effect. Earl L. PyeOak Hills, Calif . Limited evidence suggests that vitamin B12 absorption may be impaired in some people with chronic fatigue syndrome. No published […]
- Humans
Letters from the July 1, 2006, issue of Science News
Looking into the future Your article states that farsightedness will be treated with these new electric lenses (“Switch-a-Vision: Electric spectacles could aid aging eyes,” SN: 4/22/06, p. 243). With some tweaking, could nearsightedness and astigmatism be treated as well? Could binoculars, telescopes, and microscopes use this technology? Roger CurnowGrand Rapids, Mich. Yes and yes, says […]
- Math
Counting Franklin’s Magic Squares
Benjamin Franklin's remarkable magic squares are just three of more than 1 million possibilities. For more math, visit the MathTrek blog.
- Humans
From the June 20, 1936, issue
A lightning portrait, the effects of cosmic rays, and helium to prevent the bends.
- Humans
Visible Proofs
This dramatic Web site from the U.S. National Library of Medicine unveils the world of forensic medicine, anthropology, technology, and history. The site includes information on significant cases, various technologies, and other topics. It also has three online activities and three lesson plans. Go to: http://www.nlm.nih.gov/visibleproofs/index.html
- Paleontology
Sticky Subjects: Insights into ancient spider diet, kinship
Remnants of a spider web embedded in ancient amber suggest that some spiders' diets haven't changed much in millions of years.
