Air quality

Provided by Bi-State Development Agency

Updated Friday, July 22 at 5:07p.m. with statement from Ameren Missouri — Ameren Missouri and the Sierra Club reached a $2 million settlement Thursday in U.S. District Court over the utility company's alleged violations of the Clean Air Act.

Eli Chen

The Environmental Protection Agency has declared that there isn't enough information to determine if the air around Ameren Missouri's largest power plant is polluted. 

The federal agency had until July 2 to say whether an area around the power plant in Labadie, Mo., about 40 miles from St. Louis, exceeded federal safety limits for sulfur dioxide. The gas is a byproduct of coal production, which can cause respiratory illnesses, such as asthma, and exacerbate cardiovascular conditions at high levels.

Eli Chen | St. Louis Public Radio

There's good ozone and there's bad ozone. The good kind sits up high up in the stratosphere, protecting us from the sun's ultraviolet rays. The bad kind is formed by burning fossil fuels and is found in the smog in Los Angeles and China. 

Bad ozone can cause health problems for children, for the elderly and people with lung diseases like asthma. It can also harm other living things, like plants. But like other greenhouse gases, it is invisible. So it's hard for scientists to show people the effects of bad ozone, which contributes to climate change, said Jack Fishman, professor of earth and atmospheric sciences at Saint Louis University. 

To get the message across, in recent years, Fishman and other researchers at SLU set up special gardens funded by NASA to demonstrate how ozone levels affect living organisms. Their work is expanding now that they've received a $91,000 grant from the Environmental Protection Agency to exhibit such plants year-round in "ozone chambers."

U.S. Supreme Court
supremecourt.gov

The U.S. Supreme Court today upheld the use of midazolam as part of the execution protocol in Oklahoma. The same drug had been used — and challenged — in Missouri.  In the execution of Richard Strong earlier this month, midazolam was used as a sedative before pentobarbital was used to carry out the execution.

Saint Louis University | Provided

It’s a stretch to think about summer now. 

But close your eyes and imagine.

The sun is shining; bees are buzzing; your arms move through warm air; you even have to mop a thin veil of perspiration from your brow. And on the news in the morning, Geri Mitchell intones the familiar admonition: “It’s a red air quality day. Sensitive groups should avoid exercising outdoors.”

via NASA

A new report released today by the Natural Resources Defense Council warns that smoke from wildfires poses health risks to people living far from the actual blaze.

The study used data from 2011, an especially bad year for wildfires in the US, to rank states with the greatest number of residents affected by wildfire smoke for longer than a week.

Illinois and Missouri were ranked second and fourth respectively, despite having no wildfires of their own.