- Humans have had a significant negative impact on the planet in a very short period of time, the equivalent of only 3 seconds in a 24-hour day. - This is because humans have become too intelligent for our own good, leading to issues like pollution, nuclear warfare, wildfires, hurricanes, and mass species extinctions. - If we put our effect on Earth in perspective relative to a single day, we have managed to destroy and pollute it in an extremely brief span of just a few seconds due to human-caused issues. This underscores the need for changes in how we treat our planet.