We have entered a new geological era, in which human action is changing the physical world around us.
As California struggles to meet new water use restrictions, the governor is urging a sharp increase in fines for the worst violators.
It was a picture perfect Sunday for a peaceful march against the most violent instruments of war: nuclear weapons.
The first Arbor Day in the world was celebrated in the small Spanish village of Villanueva de la Sierra in 1805.
Scientists have linked a swarm of small earthquakes west of Fort Worth, Texas, to nearby natural gas wells and wastewater injection.
On Earth Day 2015, humanity faces increasing environmental dangers, but movements to solve the issues are growing.
Earth Day encourages all citizens to help protect our environment and contribute to a healthy, sustainable world.
"It's all well and good that the wealthy are having their lawns painted green, but that's not a solution."
Grijalva, who chairs the congressional committee and is a member of the Progressive Caucus, said, "40 years of environmental policy issues are under attack."
This is the science of climate change. It is no longer up for debate.