The San Jose Mercury News has nice article summarizing environmental actions during the first year of Obama’s administration. Among them, he’s

Increased gas mileage standards for cars and light trucks 40 percent, from today’s 25 mpg to 35 mpg by 2016.

Issued EPA rules requiring large U.S. ships to cut soot emissions by 85 percent.

Announced tougher new national smog standards from the EPA this month.

Signed a stimulus package that included more than $50 billion in funding and tax credits for renewable energy projects.

These efforts include taking steps to regulate greenhouse gases. Many consider Obama to have accomplished a good deal so far when it comes to protecting the environment, although, as the article points out, the economy prevents most people from seeing it that way.