What If Humans Disappeared: When Would the Last Light on Earth Go Out?

🌍 What If All Humans Suddenly Disappeared?
If humanity vanished overnight, when would the last artificial light on Earth go out? From glowing city skylines to massive dams, nuclear plants, and solar panels—what keeps shining, and what fades first?

In this video, we dive deep into the science of energy, electricity, and human impact on our planet. You’ll discover:

How long power grids can survive without humans ⚡

Which light sources last for years (or even decades) 🌌

Why Earth would eventually go completely dark 🌑

This video is part of our “What If Earth Lost Humanity” series—where we answer mind-bending questions with science, history, and imagination.

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