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or most of us, television has been around for most of our lives. A click of a remote, and information and entertainment appears before our eyes. A lot goes into making that seemingly easy thing happen, though.
We have done a lot of experiments and covered a lot of topics. This time, we are going to play around with density, and use its ingredients to make some weird science.
One of the most attention getting weather phenomena is the rainbow.
Some of the most important weather terminology for safety is often the most confused weather terminology. Those terms are "watch" and "warning".
Sometimes in science, things mix well, other things don't, and sometimes that mix takes time. That can be said for the Three Rivers, too.
You may have heard the scientific expression "An object at rest stays at rest."
Remember that one time in math class when you said, "I am never going to use this in real life"?
Pittsburgh has a lot of bridges -- 446 of them! With bridges, there are additional things to be alert for in colder weather, such as ice.
Late in winter, people usually start looking for signs that spring is on the way. The most popular is Punxsutawney Phil. The groundhog isn't the only animal though.
We have talked about how each snowfall is different. How snow is created is different, too.
The hardest season to predict weather is winter, mainly because of snow.
The Moon is neat to watch because it has several different looks during its 27 day cycle. It sometimes looks like a fingernail. Other times it looks like half of a pie, and other times it is a bright, shiny disk in the sky.
Often, I get asked, "Why are you called a meteorologist when you study and predict weather, not meteors?"
The term "polar vortex" may sound like a cold version of a "sharknado", but unlike a sharknado, the polar vortex is a real, meteorological thing.
Standing on Earth and looking out, the Earth looks flat from our very limited view. We know the Earth isn't flat, though. Did you know Earth isn't a perfect sphere either?
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!
KDKA meteorologist Ray Petelin uses science to debunk some popular conspiracy theories.
The Pittsburgh non-profit provides the opportunity for small businesses to turn dreams into reality.
Three suspects wanted for a Friday night shooting in Saltlick Township turned themselves in to police.
The temperatures will continue to rise in Pittsburgh on Sunday.
A shooting in Homestead sent four people to the hospital to be treated.
The city of Pittsburgh and the Pittsburgh Parks Conservancy broke ground at McKinley Park, marking a major milestone in the park's revitalization.
Gambling addiction is impacting more young people, so much so that state lawmakers are calling it an epidemic.
President Trump is in Beijing meeting with China's President Xi Jinping, with the two leaders aiming to stabilize their trading relationship after last year's trade war.
The Allegheny County Health Department wants to require all employers in the county to give their employees paid parental leave.
Live updating West Virginia primary election results for May 12, 2026.
Residents heading to the polls in West Virginia's primary election now must present a valid photo ID in order to vote.
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.
Gas across the country continues to climb.
Two food items sold at Giant Eagle have been voluntarily recalled due to separate contamination risks.
If your current security system is just a dog and a basic lock, it might be time for an upgrade. East End Handyman Company's Patrick McLaren is back on PTL to show us how you can install a security camera.
Team PTL's Daisy Jade is at the CCAC West campus and she's learning more about their annual car show!
Shari Zatman is back for another segment, this time, she's giving us the instructions on how to make a floral graduation cap!
Our friend, Shari Zatman of Perfectly Planned by Shari is here to help you get through graduation season by showing you how to plan the perfect party!
In a world of viral trends, Corrine has been proving that the old Hollywood glamour hasn't gone anyway, it just needed a refresh.
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.
An artist in Pittsburgh said the Steel City clothing company used his artwork without his permission.
Alcosan's multi-billion-dollar construction project to clean up the rivers in southwestern Pennsylvania is already over budget.
Pennsylvania prisons now give suboxone to thousands of inmates, with thousands more on the waiting list.
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 Allegheny County Health Department wants to require all employers in the county to give their employees paid parental leave.
Allegheny Health Network is putting out a warning about a new social media trend.
Workers at Butler Memorial Hospital say they're ready to walk off the job if hospital management doesn't come to terms with them.
The Pittsburgh Steelers and Aaron Rodgers have agreed to terms on a one-year contract, according to reports.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
Napoleon Solo hustled to first place at the 151st running of the Preakness Stakes on Saturday, coming out on top against 13 other horses.
Cristopher Sánchez struck out a career-high 13 and earned his second career shutout as the Philadelphia Phillies blanked the Pittsburgh Pirates 6-0.
Kyle Schwarber hit his majors-leading 19th and 20th home runs of the season and Philadelphia rallied past Pittsburgh 11-9 in 10 innings.
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.
The hole left behind by Spirit will hit businesses and rental companies within Arnold Palmer Regional Airport.
The bar served its final pints Sunday night after 43 years in Oakland, near the heart of Pitt's campus.
Arnold Palmer Regional Airport officials are confident they'll be able to replace Spirit Airlines after the airline shut down early Saturday morning.
The country music superstar will be performing at 1846 Farms in September.
The exhibit transforms historic industrial and historical paintings into a multi-projection animated experience.
Country music star Lainey Wilson and former Steelers quarterback Devlin "Duck" Hodges tied the knot in a lavish Tennessee wedding.
Riverlife will reopen its free-to-access barge platform, Shore Thing, later this month.
Ten Carnegie Mellon University alumni have snagged nominations for Tony Awards.
This month's episode of Intersections with Mamie Bah.
For people who otherwise wouldn't have a chance to turn their dream business into reality, the Pittsburgh business incubator gives them that chance. Megan Shinn tells their story in the KD Sunday Spotlight.
Three men wanted for a Friday night shooting in Saltlick Township turned themselves in to police.
Stay on top of local weather with meteorologist Mary Ours’s forecast!
Allegheny County Police are investigating after four people were shot in the early morning hours on Sunday.
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.
