Keyword History

Video
Created: Mar 19 2018
Updated: Mar 14 2025
Earth has warmed by 1 °C in just over 100 years. Damon Matthews, a climatologist from Concordia University, describes how this change in temperature is both human-caused and unparalleled in geologic history. Taking us through the evidence of our warming climate, Matthews discusses what these changes mean for Canada and suggests that the case for a dramatic policy response is very clear.
Article
Created: Feb 17 2017
Updated: Sep 3 2024
Earth’s climate has changed many times and many ways. We know a lot about the natural causes and effects of ancient climate change, and this knowledge helps us state with confidence that modern climate change is a product of human activity.