Uncategorized
- Archaeology
Ancient birth brick emerges in Egypt
Investigations at a 3,700-year-old Egyptian town have yielded a painted brick that was used in childbirth rituals.
- Health & Medicine
No worry that this secret will leak
The recently discovered protein angiopoietin-1 appears to protect blood vessels from leaking, a finding with implications for research into diseases that involve swelling, such as arthritis and asthma.
- Health & Medicine
Lung cancer gene has gender bias
The X chromosome's gastrin-releasing peptide receptor gene is turned on by nicotine to produce a protein that promotes lung cancer, a combination of factors that could explain why women are more susceptible to the disease than men are.
- Earth
Just how much do U.S. roads matter?
A Harvard researcher calculates that roads directly influence the ecology of a fifth of U.S. land area.
- Ecosystems
Males live longer with all-year mating
Male butterflies live longer in Madeira, where females are available year-round, than in Sweden, where females mature in one burst.
- Plants
Why tulips can’t dance
An elliptical stem gives daffodils an unusual liveliness in the wind compared with tulips.
- 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.
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19101
Hickling and Lee, whose work was described in this article, might consider a piezoelectric crystal as a point-source speaker. One would need to figure out a proper coupling-to-substrate scheme to separate the acoustic and substrate vibrational pathways. Yves KrausMansfield Center, Conn.
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Dendrite decline in schizophrenia
Cell connections in a part of the brain's frontal lobe appear to dwindle in people with schizophrenia.
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Keys to expertise in the brain
A brain region linked to face recognition may foster expertise at identifying items in any category a person strives to master.
- Astronomy
Milky Way gets a new layer
Astronomers propose that 150 billion corpses of sunlike stars may blanket the visible disk of the galaxy.
- Chemistry
Questions of Origin
Two new studies renew controversy about the authenticity of a map that may be the first depiction of North America.
