In Ghana, the church is at the center of a bold new conservation effort. Caleb Ofori-Boateng, a 39-year-old Ghanaian herpetologist, laughs at the idea that he might be a modern-day Noah. But his life’s purpose has something in common with the famous figure from the Book of Genesis. Take the new species of small, brown, pop-eyed frog with tiny teeth and a shrill voice that he and some colleagues just described in a scientific journal. The entire population of the Atewa slippery frog is thought to live in just five clear-running streams in Atewa, a wildlife-rich evergreen forest on a…