I look at the long arc of history and see that progress is not monotonic (always increasing or decreasing). We are experiencing setbacks to overcoming our challenges, as have those who came before us. But while we can read about years passing in a paragraph in a history book, we have to live and experience those years. And with all the challenges comes new technology and drive and awareness to solve problems. As unfortunate as it is trouble breeds innovation and commitment to change far better than comfort and easy times.