EcoWatch: President Barack Obama tweeted on Saturday that we owe it to our kids to do something about climate change.
The tweet and its accompanying video lay the ground for Obamas major and long-awaited speech on climate tomorrow at Georgetown University.
In the video, Obama argues that: Theres no single step that can reverse the effects of climate change. But when it comes to the world we leave our children, we owe it to them to do what we can.
As the most powerful person in the free world,...