6,813 results
6,813 results for: Insects
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18963
I was distressed to read that Science News thinks there are no steroid hormone receptors in insects. Granted, their reproduction is not regulated by steroids, but ecdysone, the molting hormone, is certainly a steroid. There is some evidence that juvenile hormone, the hormone that regulates development and sometimes reproduction, acts through a steroidlike-receptor pathway. Other […]
- Health & Medicine
Cancer drugs may thwart Huntington’s
Drugs developed to fight cancer could also be effective against Huntington's disease and several related neurodegenerative conditions.
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A More Perfect Union
Forsaking life in the outside world, endosymbiotic bacteria of some insects traded freedom and nutrients for life inside a cell.
- Ecosystems
Deprived of Darkness
From anecdotal reports of little-studied phenomena, researchers suspect that artificial night lighting disrupts the physiology and behavior of nocturnal animals.
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18932
Please explain a curious statement in “A more perfect union.” The article paraphrases Jonas Sandstrom of Uppsala University in Sweden as suggesting that an “endosymbiont’s isolation may be a one-way ticket to extinction. Once the bacterium loses genes . . . it has no way of getting them back. It can’t, therefore, evolve away from […]
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Sitting around? (Chomp!) Back to work!
An analysis of nestmates biting each other in a wasp colony suggests that the nips and outright chomps help organize work flow in the nest.
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Obscure brain chemicals draw new attention
Long-dismissed brain chemicals called trace amines have receptors on human cells and may play a role in depression and schizophrenia.
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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.
- Animals
When Ants Squeak
In the past 20 years, researchers studying sound communication in ants have discovered a sort of ant-ernet, zinging with messages about lost relatives, great food, free rides for hitchhikers, caterpillars in search of ant partners, and impending doom.
- Animals
Hanging around Mom’s web helps everybody
For nearly grown spiderlings, lingering in their mother's web instead of setting off on their own turns out to be a boon for the mom, as well as themselves.
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Science News of the Year 2002
A review of important scientific achievements reported in Science News during the year 2002.
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Science News of the Year 2002
A review of important scientific achievements reported in Science News during the year 2002.
