Environment

From particulate matter to the AQI, here's what you need to know to protect yourself as the smoky haze settles over much of the East Coast.

Lava began erupting at the Halemaʻumaʻu crater and reached heights of 13 to 30 feet and covered an area of approximately 370 acres. The biggest threat to those in the area is volcanic gas.

Some of the worst air quality was recorded in the Great Lakes region and in Pennsylvania, New York, New Jersey and the Washington, D.C., metro area.

A good chunk of the United States is dealing with smoke following a series of wildfires in Canada. Winds have carried the smoke across the Northeast and parts of the Midwest.

Hoang Hong, founder of the environmental group CHANGE VN, was arrested Wednesday on tax charges, the U.N. says. Human rights experts say Vietnamese officials use the law to target civil society.

The state of Arizona today said it will no longer issue new development approvals based on groundwater alone.

The Hawaii resident was charged with one count of intentionally disturbing wildlife after he tried to help a baby bison return to its herd. Park rangers later had to euthanize the abandoned animal.

In springtime, a wildlife refuge in northern Vermont is a paradise of migratory birds where you can paddle through flooded maple forests.

A deal to raise the country's debt limit also includes changes to a bedrock environmental law and approves a controversial natural gas pipeline.