Pollution

Today we talk with Caroline Fraser, author of the new book "Murderland: Crime and Bloodlust in the Time of Serial Killers."

In other news, Utah's air quality has improved in the last two decades, even with its population doubling. And, tracking vehicles without consent is illegal in Utah — but what about people?

Parents may warn their children not to eat the yellow snow, but there are other things in snow you might want to avoid, like contaminants from tailpipes.

The rule would have required major reductions in methane emissions. The Environmental Protection Agency has decided to delay it for 18 months, drawing criticism from environmental groups.

Plastic is everywhere, but the effects of plastic pollution on the environment are not well-understood.

Oil and gas companies have taken measures to reduce ozone emissions, but ozone levels remain above national standards.

House Bill 420 targets industrial halogen emissions, aiming to reduce winter smog and protect public health.

A key part of combating climate change is reducing harmful emissions from meat production on so-called factory farms. One group is calling for tougher regulations to cut the amount of emissions.

It has been known for some time that heavy metal content in soils after wildfires can increase. New research suggests that fire retardants used in suppression efforts could be playing a role.

The U.S. is the world's largest producer of oil and gas and its biggest emitter of methane — much of it leaks from oil and gas operations. Companies are lining up to test methane-detection devices at the Fort Collins facility.