Breaking Fuel From the Rock
Geologists long knew there was natural gas in the Marcellus shale formation, but thought it impossible to unlock. But producers in the last decade learned to mine this huge resource by drilling horizontally to reach a large surface area, then fracturing the rock with high-pressure water, sand, and lubricant chemicals.View Interactive »
Illustrations by Stephen Rountree
Design by Stefan Estrada
Illustration Not to Scale
Pacific herring stocks are shadows of their former abundance. But the Canadian government wants to reopen fishing off British Columbia.
A computer simulation of America's worst day of tornadoes in decades finds a link to land-clearing fires in Central America.
"People find it instructive and helpful, but also kind of fun—in a macabre kind of way," says the American Alpine Club's executive editor.