Earth Observatory Blog

Submitted on 21 Apr 2017 by:

In honour of Earth Day, I’m calling attention to the reality of climate change around the world. We know that the planet’s climate is warming from many data sources. Ice cores, corals, ocean sediments, and tree rings tell the story of Earth’s climate over the past 800,000 years. Orbital satellites, sea surface temperature readings, and weather stations have recorded change over the past century. They all say the same thing: the planet is warming at an extraordinary rate.

Last year was the hottest on record. It’s the third year in a row to set a new high for the yearly...