Fast food's green trend making Big Macs and lattes more Earth-friendly

Some fast food chains, like Chipotle, have started using solar cells and hyper-efficient plumbing to cut down on their carbon footprints. Others have installed recycling bins and segregated trash, to ensure that compostable materials and recyclables get disposed of properly. But perhaps most impressively, some fast food chains are taking aim at their packaging. Starbucks and McDonald's have emerged as leaders in the green fast food movement. For the past few years, the two companies have been working on improving their sourcing, cutting down on their packaging, and lobbying the FDA to increase the amount of recycled fibers that are allowed in fast food packaging.