EarthViewer App - take a look into Earth's past

I came across this app called EarthViewer.  It's a free app for Android and iOS and as soon as I found out about it I downloaded it on my class's ipad.  This app helps to answer questions such as: "What did Earth look like 250 million years ago? Or 1 billion years ago? Or 4.5 billion years ago? What was the climate like in the deep past?"

EarthViewer is an interactive tool for exploring the science of Earth's deep history. From molten mass to snowball earth, EarthViewer lets you see continents grow and shift as you scroll through billions of years. Additional layers let you and your students explore changes in atmospheric composition, temperature, biodiversity, day length, and solar luminosity over deep time.

What cool apps have you used in your class?

This post originally appeared in my technology blog The Tech Savvy Science Teacher.