Feature

Carbonized Tree Found in Rim of Crater Lake

Radium “Seeds” Planted to Fight Cancer at Close Quarters

Unpredicted Meteor Shower Surprises Astronomers

Invisible Light Found to Pierce Thin Metal Films

Light from Exploding Star May Solve Corona Riddle

Front Matter

400,000 Yards of Concrete in Feet of Boulder Dam

[Photograph]: Cock-Horse on Ancient Greek Vase

Six Million Children without Enough to Eat

[Photograph]: Lowliest Life Rides the Air

The Authors Say

New Books