Freebee Friday: Our Changing Earth
Here’s a cool visual lesson about our impact on our planet. Go to NASA’a Landsat earth-observing satellite page and show some of the images and time-lapse videos that have accumulated over Landsat's 40-year lifetime. The site has everything from high-resolution photos from space of the current fires in California to videos of how urban centers like Las Vegas evolved over time and the earth’s glaciers are receding. Each comes with a nice description of what you’re seeing along with the science involved, perfect for a visual lesson about our changing earth.