- No. 499: How Old Will You
Be?
- No. 498: A Conference Without
Men
- No. 497: Piper Cub
- No. 496: Piltdown &
Teilhard
- No. 495: Ramanujan
- No. 494: Lysenko
- No. 493: Steam, Electric, &
I.C.
- No. 492: Books
- No. 491: Tom Swiftly
- No. 490: Balloon over the
Apennines
- No. 489: Heard Round the
World
- No. 488: Living in Outer
Space
- No. 487: The Bog Men
- No. 486: Voting Machines
- No. 485: Fleeing a Dinosaur
- No. 484: The Robot Lady
- No. 483: Dorothea Erxleben
- No. 482: Cornwall West
- No. 481: Check Mate
- No. 480: Parent and Child
- No. 479: Shakespeare-san
- No. 478: A View in Inner Space
- No. 477: Mary-claire King
- No. 476: Stirrups
- No. 475: Woman: the Body
Politic
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- No. 474: John Dee
- No. 473: Drinking Water
- No. 472: " Legendre's" Math
Text
- No. 471: Then and Now
- No. 470: The Japanese Zero
- No. 469: Nicolaus Steno
- No. 468: Starlings
- No. 467: A Steamboat in S.F.
Bay
- No. 466: Icons of Women in
Science
- No. 465: Sci. & Engr.
Education
- No. 464: Older than Clovis?
- No. 463: Chimneys
- No. 462: Fuseli's Nightmare
- No. 461: Deus ex Computer
- No. 460: Building Blocks
- No. 459: Tabby and Cob
- No. 458: About Trebuchets
- No. 457: Invicta Fire Ant
- No. 456: Synectics
- No. 455: A Navy Born of
Rum
- No. 454: Arcana: Science and
Art
- No. 453: The Man-midwife
- No. 452: Diamonds
- No. 451: Fossils in the Gobi
- No. 450: Balance of Nature
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