While reading about and discussing animal migration, we discovered that some species are forced to migrate due to changing environmental factors. Walruses must move their families as temperatures rise around the globe causing their needed ice flows to melt. The children were deeply concerned about this. One child explained that this occurs due to global warming. He shared that people all over the world are using gas and making smoke that goes up into the air and makes the temperatures go up. Another child mentioned that sometimes there is trash in the water, as well.
This conversation inspired the children to invent some very creative machines to help clean-up the Earth.