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Now Playing: 06-27-12 Marketplace Morning Report

Carmakers, power plants and oil companies are "considering their options" -- as they say -- after a Federal appeals court ruled yesterday that the Environmental Protection Agency can regulate greenhouse gas emissions. Best Buy's founder and largest shareholder, Richard Schulze, is reportedly talking to Wall Street banks about potentially turning it private. With Independence Day around the corner, we check in with Marketplace Money host Tess Vigeland about how people spend their money in politics. And today, thousands of would-be app entrepreneurs are descending on the developers' conference known as Google I/O in San Francisco to learn how to create a hit app on Google's Android operating system.