Mashable: The Defense Department sees global warming as a challenge that "poses immediate risks" to national security, rather than one that will rear its head only in the future.
This shift in thinking comes as the sprawling department puts in place a wide range of measures to ensure that its bases do not sink below the sea as the oceans rise, that its weapons systems still work in a variety of extreme weather conditions, and that it is prepared to deal with increased demands for humanitarian assistance...