No. 87: May-Jun 1993
Science Frontiers Online
The 50,000-year-old americans of pedra furada
The zuni enigma
The american discovery of europe!
The earth: a doubly charmed planet
Cosmic soot and organic asteroids
Fossil feathers fly
Is caddy a mammal?
The uniqueness of human adolescence
Animals attack human technological infrastructure
Late survival of mammoths
Whence the earth's pulse?
Giant impact-wave deposit along u.s. east coast
The vent glow and "blind" shrimp
Amazons in the sky
The bottle-green icebergs of antarctica
Alien abuctions: were they, are they real?
Calculating prodigies, gnats, and smart weapons