1. Switch to LED bulbs as soon as possible

2. Reduce food waste

3. Stop "energy vampires"

4. Seal all leaks

5. Save water

6. Adjust your diet, even if only slightly

7. Use cars efficiently

8. Talk about it

Reducing individual carbon footprints can have a huge impact on how businesses reduce their greenhouse gas emissions, experts said. The industry will respond to consumer choices, sentiment and buying behavior, they said. That's why consumers can make a big impact by talking to friends, family and colleagues about how they've saved money by living greener, Hayhoe said. "Case no. 1, which costs nothing and has the biggest impact, is to start conversations about why it matters,Hayhoe said. "Do something — anything — and then talk about it," she added. “Make it contagious in a good way.” (Greg Iacurci)