The American Lung Association released its State of the Air Report this week.

More than a dozen Michigan cities made the list of the most polluted cities in the country for ozone pollution – also known as smog – and particle pollution – also called soot. The major sources of this pollution are factories and power plants... and our cars and trucks and even our lawnmowers.

The report has three separate lists of the most polluted cities.  There are lists for ozone pollution, year-round particle pollution and short-term particle pollution.  Detroit ranked 17th most polluted for year-round particle pollution. Grand Rapids tied for 43rd worst ozone pollution.

Shelly Kiser is the director of advocacy for the American Lung Association in Michigan. 

"Ozone is created in the atmosphere with a couple chemicals that need heat and light, so it's usually something we see in the summer. It increases your risk of early death, you're more likely to have asthma attacks. Particle pollution, on the other hand, is what we think of as soot, so it's tiny pieces of something that can blow in the wind, and they are so tiny that they can go way down in the deepest part of your lungs and really wreak havoc there. It increases your risk of death during high levels over a short period of time, or at low levels over a long period of time."

There is some good news in the report. Many Michigan communities have improved air quality over previous years and some Michigan cities actually made the list of the cleanest cities in the country.  The cleanest cities for particle pollution were the greater Lansing area and Saginaw.

The invasive skunk of the insect world has been found in four counties in Michigan.

Here are the counties where the Brown marmorated stink bug has been found:

• Berrien
• Eaton
• Genesee
• Ingham

If the bug feels threatened, or if you squish it, this stink bug... stinks.

But the damage it can do to crops is what has officials in Michigan worried.

The PSU Department of Entomology says the Brown marmorated stink bug damages fruit and vegetable crops by sucking plant fluids through its beak.

A piece in lansingnoise.com estimated the damage it could do:

The U.S. Department of Agriculture late last year looked at the potential damage to crops. Topping the list was the country's $2.2 billion apple industry. Michigan's share is $115 million worth, or 590 million pounds of apples harvested each year.

"I have these growers telling me that they fear this might be the worst pest in a generation for orchards," said Denise Donohue, executive director of the Michigan Apple Committee, which represents the state's apple industry.

The bug has proven it can resist pesticides, so what's to be done?

Sabri Ben-Achour filed a report for NPR on how some researchers are looking into using foreign wasps to fight the bug:

Can wasps squash the stink bug plague?

Trissolcus wasps are from China, Japan and Korea. The same place where the invasive stink bug came from. The wasps are natural enemies of the Brown marmorated stink bug, so researchers want to know if they can release them in the U.S. without harming other native stink bugs that are beneficial.

The researchers say it will take them three years to find out. In the meantime, some farmers will continue to try to fight the bug with pesticides - Ben-Achour reports some farmers are asking the EPA to relax pesticide regulations.

This week, the Michigan Supreme Court's conservative majority reversed a major decision that allowed Michigan citizens to sue the state over pollution concerns.

In December, the high court ruled that state agencies that issue permits that result in harm can be named in a citizen suit. At the time, there was a liberal majority in the Court.

The office of Attorney General Bill Schuette asked the Court to rehear the case.

The newly conservative Court did that this week... and with an order reversed the December ruling.

Nick Schroeck is the executive director of the Great Lakes Environmental Law Center.

“What the Court did is it basically potentially rolled back a layer of environmental protection by calling into question whether or not the state can be liable for its permitting decisions. So if the state permits something that goes on to harm the environment, arguably the state should be liable if they made a bad decision. And what the Court did is they’ve kinda called that into question.”

Schroeck says he expects this new decision will be challenged.

Air quality is getting better in Michigan, according to a new report from the American Lung Association.  The association’s annual ‘State of the Air’ report says ozone and particle pollution rates have eased in Michigan during the past decade.    Lansing and Saginaw have some of the cleanest air among U.S. cities.  

Shelly Kiser is with the American Lung Association.     She says the report’s not all good news. 

"Obviously there is still a lot of work to be done…we still have a lot of bad pollution areas.”

The National Weather Service has issued a "Tornado Watch" for much of Michigan until 10 p.m. tonight. A "tornado watch" means conditions are favorable for the development of tornadoes in and close to the watch area.

The Michigan Counties included in the watch are: