(answer from GPT-4)
If humanity were to disappear today, the transformation of Manhattan over three thousand years would be dramatic. The process of nature reclaiming the land would be both fascinating and complex. Here’s a speculative look at what might occur:
Immediate to Short-Term Changes (1-100 years):
- Power Outages: Without humans to maintain systems, electricity would fail almost immediately due to fuel depletion at power plants. This would lead to the cessation of pumps that currently keep the subway system and other low-lying areas dry.
- Water Infiltration: The absence of active maintenance and pumping systems would result in water flooding the subway tunnels within days or weeks. Buildings and infrastructure would begin to suffer water damage, especially in their foundations.
- Plant and Animal Colonization: Very quickly, plants would start to sprout in less dense areas such as parks, abandoned lots, and any crevices where soil and seeds could accumulate. Animals, including bird