Transportation Secretary Ray LaHood announces a federal ban on texting for commercial truck drivers, Jan. 26. Cliff Owen/AP hide caption

itoggle caption Cliff Owen/AP

The Supreme Court decision on corporate spending in political campaigns overturns a 20-year-old ruling. Michael McCloskey hide caption

itoggle caption Michael McCloskey

Smog shrouds the Los Angeles skyline. New ozone standards from the EPA aim to reduce smog, but may actually increase global warming. David McNew/Getty Images hide caption

itoggle caption David McNew/Getty Images