MSNBC - The world cannot afford to allow nature's riches to disappear, the United Nations said Monday at the start of a major meeting to combat losses in animal and plant species that underpin livelihoods and economies. The United Nations says the world is facing the worst extinction rate since the dinosaurs vanished 65 million years ago, a crisis that needs to be addressed by governments, businesses and communities. The two-week meeting aims to prompt nations and businesses to take sweeping steps to protect and restore ecosystems such as forests, rivers, coral reefs and the oceans that are vital for an ever-growing human population. Read More