Some germs ride a superhighway at the edge of space
The stratosphere is both beautiful and deadly — a boundary between Earth and space, between life and death. Hover within it, some 30 kilometers (almost 20 miles) above the ground,…
The stratosphere is both beautiful and deadly — a boundary between Earth and space, between life and death. Hover within it, some 30 kilometers (almost 20 miles) above the ground,…