USA Today: President Obama ordered the federal government Thursday to cut greenhouse emissions by 40% over the next decade, and said he hopes private businesses and other nations will follow suit. The executive order signed by Obama also directed the government to increase its use of renewable resources to 30% of energy use. "These are ambitious goals, but we know that they're achievable goals," Obama told reporters after he examined the solar panel technology at the U.S. Department of Energy. In addition,...