If all human beings disappear, what will happen to New York city?

• 10 years later: Sidewalks crack and weeds invade. Hawks and falcons flourish, as do feral cats and dogs. The rat population, deprived of human garbage, crashes. Cockroaches, which thrive in warm buildings, disappear. Cultivated carrots, cabbages, broccoli, and brussels sprouts revert to their wild ancestors.
• 20 years later: Water-soaked steel columns supporting subway tunnels corrode and buckle. Bears and wolves invade Central Park.
• 50 years later: Concrete chunks tumble from buildings, whose steel foundations begin to crumble. Indian Point nuclear reactors leak radioactivity into the Hudson River.
• 100 years later: Oaks and maples re-cover the land.
• 300 years later: Most bridges collapse.
• 1,000 years later: Hell Gate Bridge, built to bring the railroad across the East River, finally falls.
• 10,000 years later: Indian Point nuclear reactors continue to leak radioactivity into the Hudson River.
• 20,000 years later: Glaciers move relentlessly across the island of Manhattan and its environs, scraping the landscape clean.