New York Times: For an earnest young Christian named Ben Lowe, revelation came on the shores of Lake Tanganyika, in Africa. A relentless warming of the lake was reducing the catch of fish, the people were going hungry and he had learned of scientific evidence that climate change was to blame. For the Rev. Brian Sauder, who grew up attending a small Anabaptist church in rural Illinois, the moment came in a college classroom. Studying the fallout from environmental degradation, he learned of poor people who had...