No. 52: Jul-Aug 1987
Science Frontiers Online
Costa rica's neglected stone spheres
The calico debate, plus a little editorializing
Small icy comets and cosmic gaia
Carbon in a new comet
Meteorites also transport organic payloads
Supernova confusion and mysteries
"COMPACT STRUCTURES": WHAT NEXT?
Checklist of apparently unknown animals
New vertebrate depth record
Parasites control snail behavior
Do large meteors/comets come in cycles?
Complexities of the inner earth
Concentrated source of lightning in cloud
More carolina waterguns
More moodus sounds
Inside a texas tornado
Ship enveloped by false radar echo
Dowsing skeptics converted
Do dreams reflect a biological state?