Scientists have warned of the dangers and consequences of climate change, deforestation, and exploitation of our planet's natural resources for decades now. Sadly, these consequences are already becoming a reality. In addition to rising water levels and agricultural failures around the world, a huge number of species, from fish to mammals to plants, have also been disappearing. Scientists believe the Earth has already gone through five mass extinction events, and many fear that we are already in the midst of a sixth. Hundreds of species of organisms have disappeared in the 21st century alone.
Want to know what some of those lost species are? Read on to find out.