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Articles in May 1995 issue of Discover

• Early signifiers: the first conversation may have been a quiet one; the first language may have been a language not of voices but of signs
  by Carl Zimmer
• Waterfall clocks - using waterfall sediment to determine the flood history of Australia - Breakthroughs
• Poll vaulting: you can trust figures - but can you trust who's doing the figuring?
  by Jeffrey Kluger
• Hearts and minds - heart attacks and women
  by Elisabeth Rosenthal
• The race against AIDS - viral replication research
  by Sarah Richardson
• Better bent than broken - use of flexible materials in Nature
  by Steven Vogel
• Everyone's a critic - research into cognitive capabilities of pigeons - Breakthroughs
• Rocket on round trip - Delta Clipper Experimental space vehicle
  by Jeffrey Kluger
• Dinosaur mine - discovering dinosaur DNA in a Utah coal mine
  by Kathy A. Svitil
• Wave of the future - discovery of mathematical 'wavelets' by Ingrid Daubechies
  by Hans Christian Von Baeyer
• Re-bar revolution - corrosion-resistance - Breakthroughs
• Gut thinking - the connection between brain size and diet in monkeys
  by Peter Radetsky
• Soul Music. - book reviews
  by Andrew Wheeler
• Taking back the nest; as cowbirds push some songbirds toward extinction, conservationists are debating an uncomfortable solution: killing the pests
  by Daniel Dunaief
• The brain that misplaced its body - the condition called anosognosia - Cover Story
  by James Shreeve
• Constant as the Northern Star - Polaris
  by Bob Berman