Feature

Ancient Sharks Had Teeth like Fish-Spears

Christmas Trees Should Fall as Martyrs to Better Forests

[Photograph]: The Dwarfs’ Funeral Feast

Change in Soil Texture Keeps Roads from Freezing

Control of Environment Speeds Growth Ten Times

Motion Pictures Used to Measure Growth of Germs

Research Reveals Insulin as New Member of Protein Group

Intercontinental Land Bridges May Have Been Isthmuses

Increase in Death Rate for All Ages Is Predicted

Freezing Food Does Not Kill Botulinus Germ

California Sheep Gives Birth to Sextuplets

Jungle Ruins Yield Mayan Masterpiece