Wyoming
How to build your own air filter for wildfire smoke
SCOTT DETROW, HOST:
It’s almost summer, and if recent years are a guideline, that means heightened threats of wildfires. Billowing smoke from wildfires can cause dangerous air quality levels. Air filters in homes can help manage smoke, but what if you don’t have one? NPR’s Alejandra Borunda set out to see if it is possible to make your own air filters.
ALEJANDRA BORUNDA, BYLINE: The short answer is yes. You can build a DIY air filter in less than 30 minutes with stuff that you probably already have in your house.
ELLIOTT GALL: My name is Elliott Gall, and I am an associate professor in the department of mechanical and materials engineering at Portland State University.
BORUNDA: He’s the designer of this air filter called The Cocoon. Graduate student Brett Stinson explains.
BRETT STINSON: It’s pretty simple. It’s just a fabric filter. This is cotton batting and a box fan.
BORUNDA: Basically, just a tube of fabric attached to a box fan. Gall says it’s an old technology called a baghouse filter.
GALL: And it essentially is a piece of fabric that you force air through that filters out particulate matter.
BORUNDA: To me, it looks like a blobby, puffy, 8-foot-long sausage. But it works almost as well as air filters you can buy. Here in the lab up in Portland, we load up a sealed bedroom-sized area with smoke and start The Cocoon running. Within about 10 or 15 minutes, the air is pretty much clear. And my partner and I set out to build a Cocoon for ourselves.
This is Ali (ph) and Alex’s (ph) attempt to make a box fan filter.
Gall sent me a PDF with instructions. First, we track down a standard box fan, like the ones they sell in just about every hardware store. Then you need a big piece of fabric that’s 72″ wide.
Here’s the measuring tape.
That’s important because that size will fit neatly on the fan.
(SOUNDBITE OF MEASURING TAPE PULLING AND RETRACTING)
BORUNDA: Gall used cotton batting like the stuff inside of quilts.
But we don’t have that, obviously. I’m not a quilter. What we do have – and they say is OK – is sheets. Cotton or linen work best, they say.
We found an old, full-sized flat sheet in the back of a cabinet. That was perfect. Bigger ones could work, too, but you’d have to cut them down. So then we took the sheet, and we folded it in half lengthwise, like a giant hot dog bun. And then I attached the two long sides together very carefully with duct tape.
(SOUNDBITE OF DUCT TAPE PULLING)
BORUNDA: You end up with this big, long tube. And then you take some rubber bands or hair ties or whatever and twist them around one end of the tube – like you’re putting it in a little ponytail.
(SOUNDBITE OF RUBBER BAND SNAPPING)
ALEX: That works.
BORUNDA: And now we’re on to the last step. We slip the open end of the fabric tube around the edge of the box fan and duct tape it in place.
(SOUNDBITE OF DUCT TAPE PULLING)
BORUNDA: But make sure you don’t make this mistake.
I covered up the controls. So that’s a little bit silly. That was my mistake. Don’t do that.
Then we turn it on.
(SOUNDBITE OF FAN WHIRRING)
BORUNDA: Ooh. And we have inflated a giant blue tube.
It poofs up and looks exactly like one of those slinky tubes little kids crawl through. Gall says it works best if you can run it in rooms that aren’t too big, like overnight in a bedroom, for example. For NPR News, I’m Alejandra Borunda. Transcript provided by NPR, Copyright NPR.
NPR transcripts are created on a rush deadline by an NPR contractor. This text may not be in its final form and may be updated or revised in the future. Accuracy and availability may vary. The authoritative record of NPR’s programming is the audio record.
Wyoming
Wyoming Town Rivalries – Feuds & Hate
Since moving to Wyoming many years ago, and having lived in a few towns around the state, I find that some town and city rivalries must be addressed. Some are based on past conflicts that still cause pain to this day. Some are unexplained.
For example, to this day, all of Johnson County still does not trust Cheyenne after the Johnson County War of 1892. Cattlemen in Cheyenne sent a hit squad hired by the barons to invade Johnson County to eliminate alleged rustlers. A shootout that lasted several days ensued.
Other town rivalries include:
Green River vs. Rock Springs: The two towns are close together and share one of the most intense and oldest community, cultural, and athletic rivalries in the state.
Lander vs. Riverton: Located in Fremont County, this rivalry dates back to 1922 and divides the area over high school football bragging rights. They talk a lot of smack about each other.
Cheyenne vs Casper: The towns just HATE each other. I’ve lived in both, and I can tell you that there is nothing wrong with either town. But I’ve come across people in both towns who talk about their hatred of the other.
There is not a lot of love across Wyoming for Jackson, mostly because of the mega-rich liberals who live there. Many of those mega-rich liberals look down on the rest of Wyoming.
Folks talk smack about Laramie, but in a very different way than people talk smack about Gillette.
Having traveled around Wyoming, I can tell you that most of this hate is just nonsense and a waste of time. In the end, we are all Wyomingites. Just one big bickering family who still have each other’s backs when it comes down to it.
The Charmingly Odd Town Of La Grange Wyoming
It is well worth the long drive to see one of the most interesting and quirky little towns in Wyoming.
Stay for lunch. You won’t regret it.
Gallery Credit: Glenn Woods
Jay Em, Wyoming, Frozen In Time
Jay Em, what an unusual name for a town.The few people who live there are proud of what their spot on earth once was, and they work to preserve it. They keep this little community frozen in time.
Gallery Credit: Glenn Woods
Wyoming
Wyoming mountain bike hotspot Curt Gowdy wants to know how it can improve
Wyoming
Hoping to draw Colorado interest, construction begins at $80M betting facility in Laramie County
CHEYENNE, Wyo. — Foundation work is beginning this week on Wyoming’s next horse betting and gaming house.
The $80 million Wyoming Downs facility in Laramie County, one of two the company is investing in over the next couple of years, is poised to be one of the largest facilities of its kind in the state. The company is aiming for a spring 2027 opening.
The facility will host upwards of 600 historic horse racing machines, Wyoming’s largest TV wall, multiple dining options and more across 58,000 square feet. More land was bought for future hotel development. Commuters driving between Cheyenne and the Colorado border can see clearly from Interstate 25 the expansive development.
That placement along the travel corridor is purposeful, Wyoming Downs and 307 Horse Racing President Kyle Ridgeway said.
“I think that the targeted consumer for this is from Colorado or from the Front Range,” Ridgeway said. “I anticipate we’re going to have plenty of people from Cheyenne come down here to play and enjoy the amenities, but when you look at 600,000 people within a 30-minute drive, that’s what justifies this investment and brings all that tax revenue in from another state, which is fantastic.
“We don’t get the opportunity to do that in Wyoming very often.”
There is still plenty to offer Cheyenne residents besides the facility’s amenities. Ridgeway said in a speech to attendees at the project’s groundbreaking Tuesday, June 2, that more than 150 permanent jobs will be supported by the facility on top of the dozens supported by the companies’ corporate offices and the 400-plus involved in the project’s construction.
Groathouse Construction, a Wyoming business, is the project’s general contractor. Wyoming Downs said it believes putting the project in local hands also helps keep the project uniquely Wyoming-focused.
Ridgeway added the facilities have already proven themselves to be effective tax revenue generators for the local governments. The Wyoming Gaming Commission’s 2025 report, released in late May, shows bettors wagered $2.49 billion on historic horse racing machines last year, a jump from the $2.11 billion wagered in 2024.
Wyoming Downs facilities generate roughly $25 million in taxes annually across the state, and Ridgeway estimated after the ceremony that the upcoming $80 million facility alone will generate an additional $3 million for Laramie County once the property has been in operation for a few years.
Horse betting sites have been increasingly popping up across Wyoming this decade. The Wyoming Downs location will be Cheyenne’s second large-scale horse betting facility since 2024, when the 30,000-square-foot Horse Palace at Swan Ranch opened. Ridgeway said Wyoming Downs is still offering something fresh for tourists and residents.
“This’ll have amenities that Swan Ranch doesn’t have, including the largest TV wall in Wyoming and a pretty super-cool sports viewing area with a restaurant and just a level of finish and class that I don’t think Wyoming has quite seen yet with these types of properties,” he said.
Ridgeway said he thinks resident fatigue with these facilities isn’t as strong as it appears, especially given the tourism benefits of off-track betting.
“Wyoming’s been built on mineral extraction and tourism, and what this is is a touristic facility. I’m not aware of any particular pushback about this specific facility outside of — you see random social media comments where people say, ‘Oh, another gambling facility.’ But where this is located, I think people in Cheyenne have generally been supportive of,” he said.
The Laramie County facility will be just one part of a larger project Wyoming Downs is working on over the next few years. Construction will begin in early 2027 on a similar facility in Evanston looking to draw in Utah and western Colorado crowds.
Some of the company’s current facilities, notably in Casper, Cheyenne and Rock Springs, will see millions poured into renovations as well. New smaller-scale parlors will also go up in Gillette and Green River this year, according to an information packet provided by the company.
More details will come as the construction process develops, Ridgeway said. Details about amenities, such as what the complex’s dining options will look like, remain undisclosed, though Ridgeway promised that options will be “excellent.”
“We haven’t made final selections on what the options are, but we have a number of different options on the table that we’re considering for what we want to offer for the customers,” Ridgeway said. “You have to have something that’s high quality for where this is located. If somebody’s going to drive 25 or 35, or even 45 minutes to come here, they got to be able to sit down and have a quality meal.”
For more information as it becomes available and to learn more about Wyoming Downs facilities and 307 Horse Racing‘s events and offerings, see the companies’ websites. Renderings for the upcoming Cheyenne facility commissioned by the company are available for viewing below.







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