The World Wildlife Funds (WWF) see here Living Planet Index tracks some 4,000 species of birds, fish, mammals, reptiles and amphibians globally. It shows that between 1970 and 2007 land-based species fell by 25 percent, marine by 28 percent and freshwater by 29 percent and add to that the fact that marine bird species have fallen 30 percent since the mid-1990s.
Scientists see the loss of plants, animals and insects as the start of the sixth great species wipe out in the Earth's history, the last being in the age of the dinosaurs which disappeared 130 million years ago. Did you notice that fact in the first part in this paragraph, it's not simply animals that are at risk, no, its plant life as well! Scientists point out that most of the world's food and medicines come initially from nature, and note that dwindling species put human survival at risk.
Put into plain english, World Biodiversity has plummeted in the last 35 years and yet we are still consuming resources as though we had three planets to support us. Globally we are using at least 25% more resources than the Earth can possibly replenish in one year. But never mind, one can still buy an airline ticket cheaper than the cost of a cup of coffee at the airport lounge... Nero playing the violin while Rome burned has nothing on this.