This caught my eye on a walk home from work. Moss growing on an old water main in downtown. A reminder of how nature will overcome and adapt. What will the world look like when humans are gone? Trees growing through the middle of skyscrapers. Grass and bushes overtaking highways. Nature reclaiming its rightful territory. To understand how well nature can recover and adapt, read this story about Chernobyl 25 years after its meltdown disaster.