Over the last decade, many evangelical Christians have embraced the doctrine called creation care, which uses a scriptural basis to promote good stewardship of the earth and its resources. For these believers, problems like climate change threaten to greatly intensify third-world poverty, making actions to reduce global warming emissions an urgent Christian issue. “We are convinced that evangelicals must engage this issue without any further lingering over the basic reality of the problem or humanity’s responsibility to address it,” hundreds of evangelical leaders declared in a 2006 statement on climate change. But while a growing number of local and national...