They may be among the most misunderstood landscapes, but scientists say Canada's swamps have a powerful role to play in combating climate change. Bogs, marshes and wetlands across the country are the secret stars of carbon capture, but most people don't realize their worth, said Christina Davy, a research scientist for the Ontario Ministry of Natural Resources and Forestry. "Because they do look like big mud puddles when you don't understand how important they are, I think we don't always give them the value that they really deserve," she told What on Earth host Laura Lynch. "And I think that people understanding why they're important is a big step to conserving them and slowing the rate of loss."