DETROIT – It is no secret that extinctions have been happening at an alarming rate in recent decades with human involvement and climate change blamed for creating habitats unsuitable for many species of wildlife.

Even more worrying is the findings of a major study by the International Union for Conservation of Nature (IUCN) Red List of Threatened Species and BirdLife International which found that the earth may be on the brink of a mass extinction event.

Worldwide it is thought that more than 500 species of land animal are close to extinction and could be lost within the next 20 years. The report was published in the scientific journal Proceedings of the National Academy of Sciences, and studied 29,000 species of land vertebrate. They estimated that the number of extinctions expected in the next two decades would likely take thousands of years if not for the negative impact of humanity.

To find out what a mass extinction is and what it means to you, click on AS