CamelBak brand water bottles hang on display at an outdoor supply store

How Safe Is BPA-Free Plastic?

With BPA gone from many plastic products, researchers are concerned about other environmental chemicals, which might cause reproductive harm.
Milk in glass jugs at a supermarket

Got Milk? You Probably Got Fire Retardants, Too

“Forever chemicals,” also known as PFAS, have been found in 43 states so far, turning up in milk, eggs, and fish.
Parmelia Lichen

Lichens as Sensors for Air Pollution

Lichens often go unnoticed, living on the ground, on tree trunks, or on rocks. They're hearty, but remarkably sensitive to air pollution.
Drain pipes flowing into a bay

Antibiotics Are Getting into Everything

How does a wild dolphin end up resistant to antibiotics?
A river

The Controversial Core of the Clean Water Act

Proposed changes to the Clean Water Act would make it more difficult to define what bodies of waters are deemed worthy of protection.
Ira Jackson pulls his boat through a flooded street September 5, 2005 in New Orleans, Louisiana after Hurricane Katrina

How Toxic Are Flood Waters?

While flood waters can be extremely polluted, researchers have found the lasting impact is different from what one might expect.
A carnival cruise ship

The High Environmental Costs of Cruise Ships

Cruise ships pose many environmental concerns, from waste disposal to toxic paint to the creation of noise that can harm marine life.
A constellation of satellites

Losing the Night Sky

Does an increase in satellites mean we soon won't be able to see the stars?
A landfill with smoke in the background

The Lowdown on Municipal Trash Incinerators

Burning household trash in massive incinerators saves landfill space, but it also introduces a host of other waste management issues.
A large tree with moss-covered roots.

How Trees Can Save Lakes From Algae Blooms

In addition to cleaning air pollution, trees absorb excess nutrients from soil, preventing algae blooms in waterways.