Science Frontiers
ONLINE
No. 71: Sep-Oct 1990
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Contents
Archaeology
Florida's circular canals
GREAT ANCIENT CIVILIZATIONS IN AMAZONIA? RIDICULOUS!
The sweet track
Another anomaly bites the dust
Astronomy
Modern technology gets
Two hot spots on mercury
Astronomers cope with both
Biology
NATURE COMMUNICATES IN MYSTERIOUS WAYS
Those amazing insects
The bombardier beetle pulse-jet
Duesberg revisited
Geology
Pennsylvanian time-scale problems
OF TIME AND THE CORAL - AND OTHER THINGS, TOO
Paleomagnetic pitfalls
What's another dipole or two?
Wyoming: a periodic spring
WYOMING: IS OLD FAITHFUL A STRANGE ATTRACTOR?
Geophysics
Ball lightning studies
LUNAR ECLIPSES AND RADIO PROPAGATION
General
Novel forms of matter
