Feature

Evolution and Diet Causing Man to Lose His Teeth

Develop Device to Test Bumpiness of Diesel Fuel

[Photograph]: Lightning Twists

Civilian Population without Adequate Poison Gas Defense

Valve on Parachute Allows Descent to Be Controlled

Science Today and Tomorrow

In Science Fields

Thoughts Can Kill

Earliest Americans Linked with OldStone AgeEuropeans

Nature Ramblings: Buffalo-Grass

Quake Shakes Sea Bottom off British Columbia

200-Inch Telescope Mirror Now Nears Room Temperature