When I arrived on the planet, there were only two billion. Wildlife was more abundant, we were less so; now the situation… — Sylvia Earle Copy Share Image
Six billion of us walking the planet, six billion smaller worlds on the bigger one. Shoe salesmen and short-order cooks who look… — Dean Koontz Copy Share Image
If we are still here to witness the destruction of our planet some five billion years or more hence, then we will… — Stephen Jay Gould Copy Share Image
