Feature

New Ideas and Gadgets

New Accelerator Extends Molecular Beam’s Energy

New Plant Hormone May Improve Crops

Does Life Exist on Mars

[Photograph]: Submarine Ribs

U. S. Ready for Fruit Fly

Device Sends More Sound

35 Elected to Academy

The Sierra Nevada Has Varied Climate, Plants

Health Program Evaluated

Mercury Rotation Found

Vaccine Aids Recruits