A measles outbreak hits the Northwest, Australia breaks heat records, and a fourth state mulls banning the gay panic defense.
Arctic ice north of Greenland that normally remains frozen even during the summer has opened up.
This July in California's Death Valley National Park will mark the hottest month ever measured in human history.
Some of the poorest people in the U.S. end up spending more than 50 percent of their income on energy over the course of the year.
By the end of the century, deadly heat waves could become an annual occurrence in South Asia.