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Hey Ray: Corn Sweat

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."

Jul 20, 2024 (02:25)

KDKA-TV Morning Forecast (10/16)

KDKA-TV Morning Forecast (10/16)

KDKA-TV Nightly Forecast (10/15)

KDKA-TV Nightly Forecast (10/15)

Allegheny General Hospital nurses vote to authorize strike, plan informational picket

Allegheny General Hospital nurses vote to authorize strike, plan informational picket

Pennsylvania man who killed 8 people was "controlling" patriarch, police say

Pennsylvania man who killed 8 people was "controlling" patriarch, police say

Ireland Contracting Nightly Sports Call: Oct. 15, 2026

Ireland Contracting Nightly Sports Call: Oct. 15, 2026

Pittsburgh Coffee Week

Pittsburgh Coffee Week

Jeff Kinney talks newest "Diary of a Wimpy Kid" installment, "Fight or Flight"

Jeff Kinney talks newest "Diary of a Wimpy Kid" installment, "Fight or Flight"

Family Feed: Oct. 15, 2026

Family Feed: Oct. 15, 2026

What's new at Kennywood this fall

What's new at Kennywood this fall

Talk the Talk: Oct. 15, 2026

Talk the Talk: Oct. 15, 2026

Meet the Pittsburgh-area wrestler Los Tonios

Meet the Pittsburgh-area wrestler Los Tonios

Pittsburgh's only Spanish language radio station gets $5,000 grant

Pittsburgh's only Spanish language radio station gets $5,000 grant

KDKA-TV Evening Forecast (10/15)

KDKA-TV Evening Forecast (10/15)

Video shows officer punching and tasing man sitting in chair on porch

Video shows officer punching and tasing man sitting in chair on porch

Truck driver caught on camera in viral video trying to run area motorcyclists off the road

Truck driver caught on camera in viral video trying to run area motorcyclists off the road

Terry Bradshaw reflects on life, health struggles in new memoir

Terry Bradshaw reflects on life, health struggles in new memoir

Pittsburgh-area funeral home director accused of pet cremation fraud to plead guilty

Pittsburgh-area funeral home director accused of pet cremation fraud to plead guilty

New training center planned near East Palestine, Ohio, after 2023 train derailment

New training center planned near East Palestine, Ohio, after 2023 train derailment

PTL Weekend Guide: Oct. 15, 2026

PTL Weekend Guide: Oct. 15, 2026

MediConnect Insurance breaks down Medicare enrollment

MediConnect Insurance breaks down Medicare enrollment

The Nightmare Bar

The Nightmare Bar

PTL Chat: Oct. 15, 2026

PTL Chat: Oct. 15, 2026

"Rent" comes to Greer Cabaret Theater

"Rent" comes to Greer Cabaret Theater

KDKA-TV Afternoon Forecast (10/15)

KDKA-TV Afternoon Forecast (10/15)

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