From the oceans to continental heartlands, human activities have altered the physical characteristics of Earth's surface. With Earth's population projected to p

Fifty years have passed since the first Earth Day, on 22 April 1970. This accessible, incisive and timely collection of essays brings together a diverse set of

We live on a dynamic Earth shaped by both natural processes and the impacts of humans on their environment. It is in our collective interest to observe and unde

Today's students will face the unprecedented challenges of a rapidly warming world, including emerging diseases, food shortages, drought, and waterlogged cities

Human health depends on the health of the planet. Earth’s natural systems—the air, the water, the biodiversity, the climate—are our life support systems.