It's hard to deny global warming when you witness it firsthand.
A couple spotted a beautiful, arched iceberg Canada's Bay of Exploits in Newfoundland. It was a peaceful ride past the soaring berg -- until it collapses.
You can hear the terror in Wanda Stead's voice as she urges her husband to get out the way when falling ice chunks create huge waves and a dangerous situation for the couple.
"I think my heart came up, and I swallowed it. I was petrified," Stead told the CBC. "All I could see was this tidal wave coming toward us."