dea1ccde_eople___Life_After_People_Wiki__Predictions
[Time Period] 150 years [Predictions] 
In major cities, the support columns of flooded subway tunnels fail, causing cave-ins and collapsing sections of the streets above. Vines have climbed up and into the gutted buildings where pools of water collect. Plants now grow throughout the floors, forming vertical ecosystems. Birds, rodents and snakes have moved in, followed by the descendants of house cats who find all they need to survive in one place. After generations of breeding with wolves, domestic dogs have returned to their pack hunting nature. Without the interference of man, the oceans recover from pollution and populations of sea life will have exploded. Seagulls, once dependent on human refuse for survival, would have a large die off decades ago, but the birds make a comeback once the fish populations return.
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Predictions