This document discusses how certain technological developments may threaten the planet's survival. It argues that non-biodegradable manufacturing like plastic packaging could take over a millennium to decompose, polluting the environment. Dependence on non-renewable energy sources such as coal, oil and gas risks depleting them within 100 years, while their extraction and use releases pollution and greenhouse gases. Nuclear power poses radiation risks illustrated by Chernobyl, and could become more dangerous if nuclear weapons are used in war, with impacts like mass casualties and long-term land contamination. The proliferation of hard-to-control technologies like biological weapons may also threaten mass extinctions of life.