This lake in Canada sports a stunning summer look - spots! And the weird geology and hydrology that makes these spots is definitely worth talking about. Plus, Spotted Lake may not be the only one of its kind, and might tell us more...

As Earth’s climate changes, one of the hardest things to figure out is exactly how the planet will change in response. And while we can’t know the future for sure, we can get a lot of good clues from the past.

NASA plans to send its Mars 2020 rover to search for signs of ancient life on Mars’ Jezero Crater. <br/>

This program outlines the classification system of sedimentary rocks. Specific attention is paid to the different ways sedimentary rock forms. The relationship between sedimentary rocks and the formation of fossils is investigated. Other...