Uncategorized
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Red, White, and Algal
Once you’ve seen the White House and the Washington Monument, either in person or virtually, spare a minute for another national treasure: the United States Algal Collection. The Smithsonian Institution’s National Museum of Natural History offers a bite-size introduction to the collection’s tens of thousands of specimens. The Web site describes each of the major […]
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Special Sleep Issue : PDF Download page
All files are saved as PDFs. Please download Adobe’s Acrobat Reader to view these files. Sleep Special : Complete PackageHigh Quality (17MB) | Low Quality (2MB) The Why of sleep (Tina Hesman Saey) / All Kinds of Tired (Susan Milius)High Quality (6.7MB) | Low Quality (1.1MB) Sleep gone awry (Laura Sanders)High Quality (2.5MB) | Low […]
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From the October 10, 1931, issue
X-RAYS FIND NEW BEAUTIES FOR STUDENTS OF FLOWERS Searching the secrets of a flowers heart acquires new esthetic significance at least, and may become of importance in plant physiology and anatomy, too, through an X-ray technique developed by Mrs. Hazel Engelbrecht of Des Moines. It is not the first time that X rays have been […]
- Materials Science
Adhesive loses its stick with heat
A new type of epoxy adhesive loses its stickiness when heated, allowing easy separation of materials that were once tightly bonded.
- Materials Science
Tiny detector finds hydrogen better
Researchers have made a miniature device that can quickly detect hydrogen leaks.
- Health & Medicine
Vitamin relative may aid stroke repair
Dehydroascorbic acid, a precursor of vitamin C, may help stroke patients retain use of parts of their brain at risk from the blood shut-off caused by strokes.
- Health & Medicine
Detecting cancer risk with a chip
Researchers can use microcantilevers studded with antibodies that react to prostate specific antigen, or PSA, to analyze blood samples for signs of prostate cancer.
- Astronomy
A Cosmic Crisis?
Astronomers appear to have a heavenly crisis on their hands, and it concerns material they can't even detect.
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19017
Thank you for your update of the antics of those madcap scientists who continue to very creatively search for “dark matter.” Their frantic quest seems more and more like a comedy of the absurd. Exotic theories such as of “cold dark matter” have now been joined by desperate, contrived fantasies of “self-interacting” and “just warm […]
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Brain scans reveal human pheromones
Male and female brains react differently to two putative pheromones, compounds related to the hormones testosterone and estrogen.
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NO says yes to breathing fast
A form of nitric oxide tells the brain when the body needs to breathe faster.
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Vesicles may help embryos take shape
Chemicals that shape developing embryos may hitch rides in vesicles called argosomes.
