Explore what drives the strange science behind places like Canada's Bay of Fundy-where water levels rise as much as 50 feet during high tide, and Alaska's Turnagain Arm, where 10-foot tall "bore waves" routinely wash in from the sea.
The confluence of two geological forces created and continues to build the island of Iceland. They also keep the geology active with global implications. For now the massive, but retreating, glaciers are keeping the glaciers in check.
Professor Chris Jackson charts the planet's changing climate. He shows how the oldest rocks and fossils provide evidence of radical climate changes throughout its history, revealing that what drives them is the amount of carbon dioxide in the atmosphere.