Loss of Arctic sea ice could affect weather in northern winter. For example, it might amplify the jet stream, pushing colder temperatures further south.
The Mars rover Spirit captured this image on March 8, 2004. It was the first image of our world taken from another planet beyond our Earth-moon system.
Susan Hovorka said, "If people want to reduce emissions of CO2 - while enjoying the benefits of fossil fuels - instead of emitting, you can capture and store."