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.
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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.
- Chemistry
Questions of Origin
Two new studies renew controversy about the authenticity of a map that may be the first depiction of North America.
- Chemistry
Tums of the Sea
Ocean scientists question whether the seas can handle rising carbon dioxide concentrations.
