Can urban reforestation help lower rising temperatures?

This past summer was the hottest on record in more than a century. To shield against rising temperatures, many cities around the country are taking a closer look at trees, which have been shown to cool the air by as much as 10 degrees. Special Correspondent Karla Murthy reports from Cleveland — a city once known as 'The Forest City' — to take a look at efforts to restore its tree canopy.