The Overview Effect
This is a wonderful video of people that have gone to space and looked back at Earth.
Had we not gone to the moon and looked back, the realization that what we are doing to the Earth effects all of us regardless of borders would never have made it into the mainstream.
This is why I harp on this all the time. Going to space and getting science back onto the front pages of the media is the only way to get past climate change and science denialism.
We cannot stop now, we need to keep looking.