**By Daniel T CrossSustainability Times** In the history of life on earth there have been sixth mass extinctions of species with the most famous being the disappearance of dinosaurs from the planet. A Sixth Extinction is now upon us and this time the cause isn’t a force of nature but rather us. People worldwide have been wreaking havoc with their environment and in just the past 500 years no fewer than between 150,000 and 260,000 species may have gone extinct, accounting for 7.5% and 13% of the 2 million or so species known to science. In the history of life on earth there have been sixth mass…