Invasive species have also had an effect on habitats, particularly in Australia.
Scientists previously believed between 20 and 40 percent of the Earth’s surface was less affected by humans. But recent research found it only appeared that way from above in satellite images.
A new study found that just 3 percent of the world's land is ecologically intact, meaning most of the Earth's wilderness is dwindling and damaged as human activity expands into the natural world, The Guardian reported.
The surviving fragments of the world, untouched by man, include parts of the Amazon and Congo tropical forests, east Siberian and northern Canadian forests and tundra, and the Sahara.