The answer is simple; climate change! With such an enormous challenge facing civilization one would think that a concerted effort would be made by everyone to address the situation. Not so. In the world powerhouse USA we have a republican party that denies climate change for no other reason other that it costs money to address the problem. They are more concerned with their money than the safety of thousands of people who live along the coasts.I am unable to understand what appears so obvious to be rejected by these people.