Hey Ray! How MRI's Work
Have you ever had to get an MRI? That is the loud machine with a very powerful magnet that can make images of the inside of your body.
Watch CBS News
Have you ever had to get an MRI? That is the loud machine with a very powerful magnet that can make images of the inside of your body.
The night sky is full of amazing things during the summer! One thing that peaks in August is the Perseid Meteor Shower, and it can be one of the biggest celestial highlights in the summer.
When people refer to heat lightning, they are usually talking about seeing lightning, but not hearing thunder in the evening or nighttime, usually during the summer months.
Have you ever tried to pour something from one coffee cup into another, only to have the liquid seemingly stick to the side of the cup, resulting in a mess? Meteorologist Ray Petelin explains the science that makes that mess can also help us perform a pretty cool trick!
Smog and air quality issues can happen in our area any time of the year. Meteorologist Ray Petelin shows us how some weather patterns and our daily routines can also make the air quality worse.
If you think about it, water can be kind of weird.
Gravity is the force that attracts things toward other things that have mass.
It may be controversial to say in these parts, but it is ridiculous to use relative humidity as an indicator of comfort.
We all know that in the summer, our cars basically turn into ovens.
Last week, we talked about how light pollution makes it harder, if not impossible to see some amazing things in the night sky.
During the daytime, when you look to the sky you can't see stars, or sometimes planets that you can see at night. While daylight is the obvious reason, at night we may not be able to see some of the good stuff because of different kind of light called light pollution.
This is a fun experiment that is easy to do and requires very little set up. I like to call it the "Invisible Extinguisher," since it puts a candle out by using what seems to be an empty glass.
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.
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.
Places, people, and things have a variety of reasons for why they are named the way they are, but have you ever thought about why the Arctic and Antarctic have their names? Ray Petelin has and he explains it in a new Hey Ray!
Whenever snow falls in Pittsburgh, you hear the same refrain: milk, bread, and toilet paper, but do we really need to have those in our home? Ray Petelin makes sure you know how to prepare when snow is coming!
While we may dream of a White Christmas in the 412, the weather is often much more interesting than that. Ray Petelin explains in a new Hey Ray!
Two members of the Pagans outlaw motorcycle gang are facing charges in a fight at a bar in Westmoreland County, authorities said.
The Mount Pleasant Township couple that is accused of killing their 15-month-old baby was in court for the first time on Wednesday.
North Huntingdon residents are cleaning up after a tornado warning overnight.
The annual KDKA Fish Fry Guide is back for Lent! Check our listings for a 2026 fish fry near you in Pittsburgh.
Tenants told KDKA-TV that the tragedy didn't come out of nowhere.
President Trump predicted in a prime-time address that the U.S. will complete its military mission in Iran "very shortly," and said U.S. forces have achieved "overwhelming victories," but he did not offer a definitive timeline.
President Trump is planning to deliver a prime-time address Wednesday night to "provide an important update on Iran," the White House said, as the president faces critical decisions in the monthlong war.
A federal judge has ordered Penn to hand over records about Jewish employees on campus to a federal agency as part of an investigation into antisemitic discrimination.
A federal judge has temporarily blocked the Trump administration's construction of a 90,000-square-foot ballroom to replace the White House's East Wing,
Congress has yet to approve funding for the Department of Homeland Security, which has been shut down for over 40 days.
Fat Head's Saloon on Pittsburgh's South Side is closing next month after more than 30 years in business.
Studies show nearly 25% of Pennsylvanians can't pay their power bills at least once a year.
After a rat raised questions about health and safety at The Urban Tap, the owner says the South Side business is ready to gain back the public's trust.
Looking to get free shipping when you make an online purchase, but your order doesn't qualify? Here's how you can change that!
Pennsylvania farmers say economic factors like diesel fuel and fertilizer costs are pushing them to the edge.
This week’s waiting child, Joseph, is a very creative kid, so we had him get his hands dirty with clay and paint at the North Hills Arts Center.
If you’re planning on getting organized this year with some spring cleaning, it’s also a good time to do a “digital spring refresh" and get your monthly bills in order, too.
Pittsburgh sports fans are known for their passion, but just how far does that black-and-gold pride go? KDKA-TV’s Fan N'ATion finds out!
Easter is this weekend for many, and next weekend for those celebrating Orthodox Easter. Different dates, same delicious tradition: a beautiful braided sweet bread that takes center stage on the table.
PTL hosts Daisy Jade and David Highfield discuss Pittsburgh culture, trending news and social media, food, sports, and more.
A Sewickley Hills man said he's left without a usable driveway because PennDOT cannot get it right.
Steven Eason, 15, was shot and killed while trying to break up a fight at the Haunted Hills Hayride in North Versailles in 2021. No arrest has been made.
People in the Pittsburgh area formed "Families for Justice," a support group for parents who lost children to gun violence.
An inspection sheds light on why dust is blanketing a neighborhood in Westmoreland County.
The O'Connor administration will begin taking a scalpel to Pittsburgh's finances as it tries to close a $30 million to $40 million budget hole.
UPMC and AHN say they've been collaborating about getting ready for an event of this magnitude.
When doctors found out Ainsley Flynn had viral myocarditis, they leaped into action to save her. Now, Flynn is giving back.
UPMC Hillman Cancer Center is exploring everything radiation treatment can treat, and the success has been life-changing for people.
A Pittsburgh-area man is not just giving people living with ALS a voice, he's giving them their own voice.
A cancer once rare in young people has become the number one cause of cancer-related deaths for Americans under age 50.
Oneil Cruz homered twice and Ryan O'Hearn hit a three-run shot as the Pittsburgh Pirates beat the Cincinnati Reds 8-3.
Western Pennsylvania has historically been a hotbed for producing talent that succeeds in the NFL.
Attorney General James Uthmeier sent a letter to Goodell last week saying the league's 23-year-old Rooney Rule amounts to "blatant race and sex discrimination."
Rickard Rakell, Anthony Mantha and Egor Chinakov scored first-period goals as the Penguins raced past Detroit 5-1.
The new display panels will replace the original sidewalk bricks, which have required repeated repairs since the park opened in 2001.
Fat Head's Saloon on Pittsburgh's South Side is closing next month after more than 30 years in business.
Pittsburgh's newest music venue released a lineup of its first concerts on Monday, giving a taste of what's to come at Citizens Live at the Wylie.
Forbes' latest ranking of the world's richest people has been released, and the list features billionaires with ties to Pittsburgh.
A fire chief says a fire at an Ohio hog farm complex has killed about 6,000 pigs and unleashed a large plume of smoke that could be seen for miles.
Lawmakers in Harrisburg are looking at bills to tackle dynamic pricing.
The first stop on Boone's new tour will be at PPG Paints Arena on July 7.
The price hike raises the cost of the standard plan with ads by $1 per month and the cost of the standard and premium plans by $2.
Newborns at a Pittsburgh-area hospital dressed up to celebrate the 20th anniversary of "Hannah Montana."
11 shows will be coming to Pittsburgh, including six winners of the Best Musical at the Tony Awards.
CBS News announced Friday that CBS News Radio will be shutting down this spring after nearly 100 years of broadcasting, citing "challenging economic realities."
Stay on top of the weather in the Pittsburgh area with First Alert Meteorologist Ray Petelin's forecast.
Aaron Donald's high school football career began as an undersized player, but that didn't stop him from becoming one of the NFL's all-time greats and a future first-ballot Hall of Famer.
North Huntingdon residents were cleaning up on Wednesday after a tornado warning overnight, but after surveying the area, the National Weather Service determined the area was hit with high winds.
Two days after a deadly fire at Douglas Plaza Apartments in Wilkinsburg claimed the life of a man who couldn't escape, tenants are now saying the conditions inside are not just concerning but dangerous. KDKA-TV's Shelley Bortz reports.
The Mount Pleasant Township couple that is accused of killing their 15-month-old baby was in court for the first time on Wednesday. KDKA-TV's Chris DeRose shares more.
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.
