Hey Ray: Frost wedging
Potholes make your commute this time of year a brought one, but what causes them?
Potholes make your commute this time of year a brought one, but what causes them?
You may wonder why we meteorologists don't just use wind chill - here's why!
For years, Ray has been trying to figure out how Santa does it and now he thinks he's cracked the case!
What is the difference between a meteoroid, a meteor, and a meteorite, and why do they burn up in the atmosphere?
This time of year we hear the word "Graupel" so how does form and what is it?
Did you know that there's a bunch of science packed into "pop?"
People think a lot of things are the same, that includes weather and climate, but as Ray Petelin explains, they are not the same thing.
We're at the time of year when you start hearing the term "bomb cyclone." So, what does that mean?
You definitely recognize the "thirsty bird" toy but a lot of science goes into making it work!
When weather events like hurricanes happen, Ray gets plenty of questions, so here are some answers!
Have you ever smelled the weather? It actually does involves some cool science!
Did you know there are a couple of colors that scientifically aren't considered colors at all?
"Temperature sensitivity" means that the inks behavior is dependent on the temperature.
It's going to ruin someone's clothes but it does disappear.
Wouldn't it be nice to disappear? While you can't you can make a special lens to make some invisibility possible!
You may have heard that Earth is getting a mini-moon and that seems pretty cool, but will you even be able to see it? Ray Petelin is here to explain!
A viewer wrote in to ask Ray - "Why can we sometimes see the moon during the day?" The answer may not be what you think!
Withe colder air on the horizon, testing your home for Radon is very important. Ray and Elizabeth Petelin explain in an all-new Hey Ray!
We always perceive the sun to be yellow, but is it actually yellow? Ray and Elizabeth Petelin explore this question!
We've all put popcorn on the stove or in the microwave, but what is the science behind those popping kernels? Ray and Elizabeth Petelin are popping in with some science!
Western Pennsylvania is home to plenty of creeks and rivers, so how can you distinguish between the two? Ray and Elizabeth Petelin are here to explain!
One viewer asks: Why can they only hear the train whistle at Fallingwater when it's about to rain? Ray Petelin investigates this mystery in an all-new Hey Ray!
Have you ever heard that airplanes can't fly when it gets too hot? Meteorologist Ray Petelin explains why in today's Hey Ray.
If you've been on a walk or a hike on a hot summer's day, you've no doubt noticed a difference in heat and humidity from low vegetation to high vegetation. Ray Petelin explains the science behind "corn sweat."
If we use some markers, a plastic bag, and some water - we can make magic! Ray and Elizabeth Petelin have a cool experiment in an all-new Hey Ray!
Billionaire Elon Musk also appeared with Trump on stage, calling the November election "the most important of our lifetime."
Just weeks before the presidential election, new rules are going into effect in some states that can jeopardize people's right to vote, from challenges to voter registrations, to limits on when and how ballots may be cast.
A veteran and mental health advocate is trekking across the country without shoes to accomplish a feat never done before.
A strong cold front will lead to a quick but potent round of thunderstorms Sunday evening in the Pittsburgh area.
Both infants were rushed to Children's Hospital, where they were pronounced dead.
Billionaire Elon Musk also appeared with Trump on stage, calling the November election "the most important of our lifetime."
Former President Donald Trump is returning to the Butler Farm Show grounds for the first time since an assassination attempt in July. KDKA-TV has team coverage.
Democratic U.S. Sen. Bob Casey of Pennsylvania and Republican challenger David McCormick have held the first debate in their race for a swing-state seat.
Trump returned Saturday to Butler, Pennsylvania, for a rally at the site of the first assassination attempt against him.
Former President Barack Obama will be in Pittsburgh next Thursday to campaign for Vice President Kamala Harris.
Skilled nursing centers in Western Pennsylvania are in jeopardy.
Want to check the latest product recalls, click here!
When it comes to imported goods at local stores amid the port strike, experts say now is not the time to panic buy.
Some are making their lists and checking them twice. We talked about some helpful holiday shopping strategies ahead of the holiday season.
A popular bar on Pittsburgh's South Side was hit with a consumer alert after an inspector found multiple violations.
That's a wrap for this week on PTL!
We have our first pictures of our new PTL puppy that will be raised to be a service dog for Canine Companions.
KDKA's own Women of Steel Cassidy Wood and Susie Cool are out with a new episode of Every Blade of Grass with Cool & Cass on YouTube. They're breaking down the Steelers and Cowboys matchup.
The Pittsburgh Gaming Expo is back at the Monroeville Convention Center. PTL's Daisy Jade checks out some of the classic games sure to spark some nostalgia.
PTL's Katie O'Malley heads to the mountains to get a preview of Seven Springs AutumnFest. They have a lot of activities planned, including axe throwing. Plus, an early look ahead to ski and snowboarding season.
Skilled nursing centers in Western Pennsylvania are in jeopardy.
A man from Beaver Falls said a check washing scam almost cost him nearly $2,000.
A rise in counterfeit airbags has inspired a new campaign for consumers.
Emergency medical services operations across the state have been in crisis
Temperatures are rising over pickleball in Cranberry Township.
A veteran and mental health advocate is trekking across the country without shoes to accomplish a feat never done before.
The Allegheny County Health Department recently released new numbers on how many kids in the county have lead poisoning.
Skilled nursing centers in Western Pennsylvania are in jeopardy.
UPMC is set to take over the operations of several MedExpress locations.
A federal lawsuit accuses UPMC of holding a monopoly over workers, and now the Department of Justice is involved.
Jahiem White ran for 158 yards and a touchdown, and West Virginia rolled past Oklahoma State 38-14.
Eli Holstein threw three touchdowns and rushed for another as Pittsburgh beat North Carolina 34-24 Saturday.
Drew Allar threw for 237 yards with a touchdown and ran for another score to lead No. 7 Penn State to a 27-11 win over UCLA.
Week 6 of Pennsylvania high school football is here.
Shortstop Ryan Cox is not your typical baseball player, in large part, because this isn't your typical baseball game.
Skilled nursing centers in Western Pennsylvania are in jeopardy.
When it comes to imported goods at local stores amid the port strike, experts say now is not the time to panic buy.
The Eat'n Park in Bridgeville is looking to fill dozens of positions before reopening in the coming weeks.
PPG Paints Arena, UPMC Cooper Fieldhouse, and other venues will play host to multiple championships and tournaments.
Pittsburgh Mayor Ed Gainey will officially present his budget in mid-November.
John Amos was best known for his roles in "Roots" and the 1970s sitcom "Good Times."
Sony's PlayStation Network went down, frustrating gamers around the world who complain they weren't able to sign in to their accounts.
There are five new stadium dates for next summer in Toronto, Chicago, New Jersey, Los Angeles and Mexico City.
Kris Kristofferson, a songwriter who became a country star and A-list actor, died at his home on Maui surrounded by family on Saturday, a spokesperson said in an statement.
Throughout his 50-year career in show business, John Ashton appeared in nearly 100 movies.
A veteran and mental health advocate is trekking across the country without shoes to accomplish a feat never done before. KDKA-TV's Alexandra Todd has more.
KDKA-TV's Jon Delano talks to Michael Johnson, the author of "Fixing Congress."
Get the latest weather updates with First Alert Meteorologist Trey Fulbright's forecast.
This week's edition of Intersections with Lisa Smith.
KDKA-TV's Ricky Sayer reports.
What will you be for Halloween? Here are some of your favorite KDKA anchors and reporters in their costumes to give you inspiration.
Ahoy Team PTL! For the third year in a row, we kicked off the KDKA-TV Turkey Fund with the PTL Gateway Clipper Cruise. The weather may have taken a stormy turn, but we made the most of it all to support a great cause.
The course underwent extensive renovations ahead of next June's tournament.
Pitt came back from a 10-point deficit in the 4th quarter.
President Joe Biden, Vice President Kamala Harris and former President Donald Trump arrived in Shanksville, Pa., to honor the lives lost on Sept. 11, 2001.