Hey Ray: The Hot Chocolate Effect
If you've ever noticed that your morning coffee gets a little musical when you stir it, there's science behind that!
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If you've ever noticed that your morning coffee gets a little musical when you stir it, there's science behind that!
Pilot's Glory, Glory of the Pilot, or Pilot's Halo — whatever you want to call it, Ray Petelin has an explanation.
Why is it that when it's raining, the relative humidity isn't 100%?
The Moon is spherical like Earth, so why do we only see one side of it? Meteorologist Ray Petelin has the answer.
Heavy winds have been in the headlines lately, so has it been windier lately than it used to be in Pittsburgh?
Fluorescent bulbs can be lit up without a light fixture, but it takes caution.
The science of motion can often surprise you - and an inertia experiment could have the opposite results from what you think!
We see icicles hanging down from awnings and roofs, but have you ever seen them form sideways?
The temptation to walk or play on ice during the winter is high, but staying safe is more important. Here's how you can check if it's safe.
Whenever we get a big snowfall, people ask, "Why is snow white?" The answer, as always, is science!
People, things, and places are named for many different reasons, but how did the Arctic and the Antarctic get their names?
Every time snow is in the forecast, three magic words are uttered somewhere in western Pennsylvania!
A White Christmas is nice, but in Pittsburgh, the weather is much more interesting on December 25.
People always love to brag about how much snow they used to get back in the day, but who really has the bragging rights in Pittsburgh?
Have you ever noticed that your breath can both warm and cool things down? There is a science behind that!
Coffee is a morning staple for many, and one viewer's coffee comes with a concert built in. Meteorologist Ray Petelin explains why her coffee starts sounding weird!
Sometimes, you look up to the sky, and you see something weird. Other times you look down from up in the sky and you see something extremely weird! That happened to Edna. Pilot's Glory, Glory of the Pilot, or Pilot's Halo — whatever you want to call it, Ray Petelin has an explanation.
A viewer asks, if it's raining outside, but the humidity gauge only reads 74%, shouldn't it be 100%? Ray Petelin has the answer in a new Hey Ray!
The Moon is spherical like Earth, so why do we only see one side of it? Meteorologist Ray Petelin has the answer.
Heavy winds and windstorms have been in the headlines a lot lately, which has plenty of Pittsburghers asking, "Is it windier today than it ever has been in Pittsburgh?" Ray Petelin explains!
Meteorologist Ray Petelin has a weird experiment today where he shows us how to illuminate fluorescent light bulbs without connecting them to a light fixture!
Science can often surprise you! Meteorologist Ray Petelin has a cool inertia experiment where the result may be the opposite of what you think!
It's common to see icicles hanging from roofs or awnings, but can they form sideways? The Barton Family saw just that, and Ray Petelin explains how it may have happened!
When rivers, lakes, and ponds freeze over, it's natural to want to go play on them, but checking them for safety is important. Ray Petelin explains what you need to do to make sure you don't fall through.
When we get large snowfalls, the same question gets asked - why is snow white but when it melts, it's clear? Ray Petelin answers that in a new Hey Ray!
Joe Negri, known to many as Handyman Negri on "Mr. Rogers' Neighborhood," has died at the age of 99, just days shy of his 100th birthday.
The Pittsburgh Pirates beat the skidding Minnesota Twins 9-3 to complete a three-game sweep.
A fractured majority of Republican justices sided with a sweeping challenge brought by local and county officials against Oak Run Solar.
Police in Bethel Park are searching for the owner of a chicken that was found wandering along a roadway and temporarily disrupting traffic.
No major injuries were reported in the crash on Saw Mill Run Boulevard, but a gas station was damaged as a result.
A fractured majority of Republican justices sided with a sweeping challenge brought by local and county officials against Oak Run Solar.
The move by Republican Gov. Mike DeWine comes as tax breaks for energy-hungry AI data centers are increasingly playing a role in state budgets.
Allegheny County Sheriff Kevin Kraus is suing over a ballot referendum that he says would illegally impose term limits on his position.
President Trump said he is considering replacing the Freedom 250 concert series with a rally after many artists dropped out.
U.S. officials and negotiators were discussing a process to reopen the Strait of Hormuz, sources briefed on the conversations said.
What if what's sitting in your jewelry drawer is worth more than you think?
The price of electricity in Pennsylvania is going up next month.
The Allegheny County Health Department has issued a consumer alert for Prantl's Bakery in Shadyside, saying an inspection found pest droppings.
A Bethel Park homeowner says he's out thousands of dollars after hiring a contractor to replace his front porch.
A popular Washington County farm won't be offering pick-your-own peaches this year.
There will be plenty of professional artists showcasing their talent at this weekend's ChalkFest, but now, Boaz Frankel is trying his hand at the medium with his rendition of Heather and David!
Nothing beats the taste of homegrown tomatoes, but as any greenthumb will tell you, plants can be vulnerable to fungal disease. Garden guru Doug Oester is here to show us the early warning signs, and what you can do to prevent it!
Our very own Daisy Jade is getting up close and personal with some of the remarkable raptors at the National Aviary!
While a lot of what you eat and cook at summer barbecues are often not the healthiest choices, you can turn that around without losing the flavor! Fitness and nutritional expert Lisa Stugart joins us to show us some simple swaps!
Boaz Frankel is giving us a preview of this weekend's Chalk Festival in Pittsburgh and he's joined by The Pitt's Dr. Robby....sort of...
A lawsuit has been filed over the smell neighbors say is coming from the Sherwin-Williams plant in Rochester.
Naida Reed contacted KDKA Investigates after she said Pittsburgh Water failed to follow through on what crews allegedly promised.
What if what's sitting in your jewelry drawer is worth more than you think?
A Bethel Park homeowner says he's out thousands of dollars after hiring a contractor to replace his front porch.
It's been nearly eight years since Rachael DelTondo was shot and killed in the driveway of her parents' home in Aliquippa.
Pittsburgh, with its natural beauty and parks, can be a great place for people to put the phones down and enjoy life.
Doctors say it looks like it will be a bad season for tick-borne diseases.
Temperatures could reach into the 90s this week in Pittsburgh, and that impacts everything, including your sleep.
Frontline healthcare workers at Butler Memorial Hospital overwhelmingly approved their first union contract on Friday.
A western Pennsylvania dad went from wondering what a spot on his leg was to learning he has an extremely rare skin cancer.
The Pittsburgh Pirates beat the skidding Minnesota Twins 9-3 to complete a three-game sweep.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
Rico Dowdle has reunited with Mike McCarthy, just as his mother Leslie predicted.
Jake Mangum finished with three hits, including his first home run of the season as the Pittsburgh Pirates held off the Minnesota Twins 10-9.
Bryan Reynolds hit a two-run homer with one out in the ninth inning to give the Pirates a 6-5 victory over the Twins on Friday night.
A fractured majority of Republican justices sided with a sweeping challenge brought by local and county officials against Oak Run Solar.
The move by Republican Gov. Mike DeWine comes as tax breaks for energy-hungry AI data centers are increasingly playing a role in state budgets.
Ohio's tax break for data centers is costing the state far more than expected.
A popular Washington County farm won't be offering pick-your-own peaches this year.
If you're about to throw out all of those old documents while spring cleaning, there are some you should hold onto.
Joe Negri, known to many as Handyman Negri on "Mr. Rogers' Neighborhood," has died at the age of 99, just days shy of his 100th birthday.
President Trump said he is considering replacing the Freedom 250 concert series with a rally after many artists dropped out.
Memorial Day marks the unofficial start to summer, and a new song may be the unofficial summer anthem.
The American Music Awards celebrate fan favorites in the music world and feature performances from multiple artists.
The Carnegie International exhibition at the Carnegie Museum of Art opened earlier this month.
Stay on top of local weather with meteorologist Rob Wilson's forecast!
Joe Negri, known to many as Handyman Negri on "Mr. Rogers' Neighborhood," has died at the age of 99.
The support staff from the nonprofit "Mainstay" helps those living with intellectual disabilities lead an independent lifestyle. KDKA's Megan Shinn shares their story in the KD Sunday Spotlight.
Stay on top of local weather with meteorologist Mary Ours’s forecast!
A dirt bike rider was killed Saturday evening after colliding with a Pittsburgh Regional Transit bus in Pittsburgh's Homewood neighborhood, authorities said. KDKA-TV's Ricky Sayer shares the latest details.
Mike Tomlin stepped down as head coach of the Pittsburgh Steelers after 19 seasons with the team.
Pitt's regular season has ended with an 8-4 record.
Pitt's five-game winning streak came to an end with a 37-15 loss to Notre Dame.
Mason Heintschel set a new Pitt freshman single-game passing record in the Pitt win at Acrisure Stadium.
The 44th annual KDKA-TV Turkey Fund will help our neighbors in need have a nice meal for Thanksgiving.
