25 Unbelievable Ways Earth Would Change If Humans Became Extinct

Posted by , Updated on May 11, 2017

Have you ever wondered how long humans will last on Earth or how and when humans will go extinct? The question whether human extinction is inevitable or not has been discussed on many occasions, but the possible consequences of human extinction have received much less attention. Therefore, to give you a better idea of what might actually happen on Earth if the human extinction prediction came true, we compiled this post with 25 Unbelievable Ways Earth Would Change If Humans Became Extinct.

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Without maintenance and fuel, most power plants (such as nuclear plants and wind turbines) would stop producing power. Consequently, most of the world would go dark.

blackoutSource: gizmodo.com

Within days after human extinction, many pets and farm animals would die out due to starvation and dehydration.

PuppiesSource: marketwatch.com

All parasites that thrive on human existence, such as head lice and body lice, would go extinct.

head liceSource: bbc.com

Without power, electrical fences that used to keep livestock under control would stop working, releasing 1.5 billion cows, 1 billion pigs, and 20 billion chickens into the wild.

livestockSource: cnet.com

Pumps would stop working in subterranean tunnels and subway systems, which would result in massive floods.

flooded tunnelSource: travelversed.co

After their cooling systems stopped working, some nuclear plants would explode.

nuclear plantSource: marketwatch.com

Animal pests that live in human houses such as mice, rats, and cockroaches would suffer drastic declines and possibly also extinction.

cockroachSource: cnet.com

Domesticated horses would possibly revert back to their original wild lifestyles.

wild horsesSource: bbc.com

Without maintenance, metal structures would begin to collapse due to corrosion.

corrosionSource: mirror.co.uk

While these structures would collapse, keep reading to find out what will survive. Number 4 might surprise you!


The emission of industrial pollutants would cease, leading to a cleaner environment, eventually stopping global warming.

 industrial pollutants Source: quora.com

Curious about the effects of global warming? Check out 25 Unfortunate Effects Of Climate Change On The World.


Small dog breeds whose survival instincts and features have been purposely bred out by humans would be killed off by larger and stronger creatures.

Maltese dogSource: travelversed.co

Within just 25 years after human disappearance, most of the planet’s paved city streets and sidewalks would be covered in vegetation.

sidewalk covered with vegetationSource: marketwatch.com

Without firefighters, many structures all over the world would burn down in a fire.

burning houseSource: cnet.com

Cities built in the desert such as Las Vegas or Dubai would be covered in sand in just a few years.

Dubai Source: wittyfeed.com

Most endangered animal and plant species would make a full recovery with no humans to harm them.

tigerSource: bbc.com

Approximately one year after human extinction, satellites around Earth would start to fall from their orbit, creating strange 'stars' in the sky.

satelliteSource: dailymail.co.uk

Without power, raw sewage would slowly back up and begin to flood, polluting surrounding lakes and rivers.

sewage pipeSource: travelversed.co

Green places such as Central Park in New York would expand and take over entire cities.

Central ParkSource: travelversed.co

Without maintenance, dams would crumble, creating devastating floods. Then, the flooded areas would probably turn into swamps.

damSource: iflscience.com

After some time, houses made of wood would be completely eaten away by termites.

termitesSource: scienceabc.com

Humans have managed to crossbreed and perfect fruits and vegetables to make them more plentiful, palatable, and easier to grow, but in just 2 decades without human cultivation, vegetation would revert back to its original strains and wild forms.

fruitsSource: travelversed.co

Several hundred years after humans disappeared, wildlife would be abundant in every part of world. However, there possibly would be a redistribution of the species as some escaped Zoo animals might form new wild populations in places where they never lived naturally before.

African wildlifeSource: cnet.com

Within 100,000 years, C02 levels in the atmosphere would finally return to the levels they were before humans walked the Earth.

Tropical rainforestSource: travelversed.co

The oceans would be soon full of fish and marine wildlife, almost equal to what it was before humans started to exploit it.

marine wildlifeSource: scienceabc.com

The only evidence of our existence some 10,000 years after our disappearance would be things made with stone like the pyramids in Egypt, the Great Wall of China, and Mount Rushmore. Everything else would be gone.

pyramids of gizaSource: dailymail.co.uk

Want to know what other crazy predictions there have been throughout history? Take a look at 25 Times The World Was Predicted To End But Didn’t.

Photos: feature image: pixabay.com (public domain), 25. camerafiend via en.wikimedia commons, CC BY-SA 3.0, 24. maxpixel.freegreatpicture.com (public domain), 23. Gilles San Martin, Male human head louse, CC BY-SA 2.0, 22. pixabay.com (public domain), 21. Albert Bridge via geograph.org.uk, CC BY-SA 2.0, 20. Jiří Sedláček, Cooling towers of Dukovany Nuclear Power Plant in Dukovany, Třebíč District, CC BY-SA 4.0, 19. www.publicdomainpictures.net (public domain), 18. Bureau of Land Management, My Public Lands Roadtrip- Wild Horses and Burros in Wyoming (19990512822), CC BY 2.0, 17. commons.wikimedia.org (public domain), 16. en.wikipedia.org (public domain), 15. Ann Gordon via flickr, CC BY-SA 2.0, 14. www.pexels.com (public domain), 13. commons.wikimedia.org (public domain), 12. Tim.Reckmann, Dubai skyline 2015 (crop), CC BY-SA 3.0, 11. pixabay.com (public domain), 10. commons.wikimedia.org (public domain), 9. John Collins via geograph.org.uk, CC BY-SA 2.0, 8. Anthony Quintano from Hillsborough, NJ, United States, Global Citizen Festival Central Park New York City from NYonAir (15351915006), CC BY 2.0, 7. Alpenglowmt, 2011-06-07 17-17-11 996, CC BY-SA 3.0, 6. Althepal, Workertermite1, CC BY-SA 2.5, 5. No machine-readable author provided. Ionutzmovie assumed (based on copyright claims)., Culinary fruits front view, CC BY 3.0, 4. Gaurav Pandit, Lake Manyara Wildlife, CC BY-SA 3.0, 3. CSIRO, CSIRO ScienceImage 3828 Tropical rainforest near Cairns QLD, CC BY 3.0, 2. Gordon Firestein, School jacks klein, CC BY-SA 3.0, 1. Mark Fischer via flickr , CC BY-SA 2.0

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