A hidden pollutant is changing how the world’s forests breathe

A hidden pollutant is changing how the world’s forests breathe

For centuries, forests have followed a remarkably consistent rhythm. Beneath the trees, roots and microscopic organisms steadily release carbon dioxide into the atmosphere as they break down organic material and fuel plant growth. Scientists call this process soil respiration, and it represents one of the largest carbon flows on Earth. New research suggests that this … Read more

The secret underground system keeping the Grand Canyon alive

The secret underground system keeping the Grand Canyon alive

Every year, millions of people visiting Grand Canyon National Park stop at one of the park’s water stations. Some are standing on the rim, seeing the canyon for the first time and topping off a water bottle before continuing their trip. Others are far below, hiking through extreme heat, refilling reservoirs and pouring water over … Read more