Uncategorized
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19093
Cornell University entomologist Jeffrey G. Scott sees a cockroach contraceptive as still being a long way off. He may wish to investigate such a product that has been very effective and on the market for years. I can personally attest to its effectiveness. The common “flea bomb” that one gets from a veterinarian–the kind that […]
By Science News - Chemistry
Birth control for male cockroaches
Scientists have discovered a gene in German cockroaches that may lead to a new type of insect control—contraception for male cockroaches.
- Chemistry
Coming up roses in scent research
Aroma chemists have discovered a carotenoid-processing enzyme that makes the chemicals that give rose oil its smell.
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Milestones for Malaria: Parasite, mosquito genes decoded
Unraveling the DNA of a malaria-causing parasite and of a mosquito that carries it may suggest new ways to combat the deadly disease.
By John Travis - Chemistry
Nutty and fungi-ble taxol sources
The active ingredient in the anticancer drug taxol has turned up in hazelnuts and fungi.
By Janet Raloff - Chemistry
Unsung benefits of darker, tasty oils
Processing to erase the distinctive flavors and colors in cooking oils also removes or deactivates compounds that can defuse biologically damaging chemical reactions in the body.
By Janet Raloff - Earth
A deadly threat in undeployed airbags
The extremely toxic and reactive chemical used to inflate airbags could cause risks to human health and wildlife if accidentally released into the environment.
By Janet Raloff -
19118
As a former director of engineering of a defense-products company, I’m very aware of the explosive nature of sodium azide. I know that there have been serious explosions in industries (including the airbag industry) that use metal azides. A few reasons sodium azide may have been selected for use in airbags are it releases gas […]
By Science News - Chemistry
The power of caffeine and pale tea
The relatively rare brew known as white tea offers more caffeine than green tea—and perhaps more anticancer activity.
By Janet Raloff -
- Health & Medicine
Silencing the BRCA1 gene spells trouble
Some breast cancer patients without a mutation in the BRCA1 gene nevertheless have an incapacitated gene, silenced by a process called hypermethylation of nearby DNA.
By Nathan Seppa - Tech
DNA embrace might drive micromachines
DNA interactions that bend tiny diving boards, or cantilevers, may open the door to powering micromachines by means of molecular reactions.
By Peter Weiss