[ge96]

I was recently at a wet lands were there were hundreds of thousands of snow geese making the lake white and blackening the sky, crazy to see and yeah we are blessed with the ability to change the entire Earth, the other guys are just along for the ride

[fwipsy]

Beaver dams change ecosystems. The Earth has oxygen due to cyanobacteria. Pedantically, all living beings change the Earth. But it certainly seems like we're the ones making the biggest changes at the moment.