Feature

[Photograph]: Antarctic Instrument

Assume Every U. S. City Can Be Attacked

Birds Do Not Respond to Foreign Bird Calls

Eating Habits Change

Can Tell Sex of Very Young Embryos

TV Device Takes Live Cell Pictures

Rotation Unnecessary for Television Antennas

Scientia International

Test Red Blood Cell Survival in Cirrhosis

Nature Ramblings: The Travelers

Typewriter Writes from Spoken Words

Erratum: Stop Lightning Fires