Made the upgrade to LED holiday lights this year? Several companies will mail you a coupon for discounted lights if you ship your old strings to them. File photo.

Ask Betty: Going green, staying warm

Teri Kent runs Charlottesville’s Better World Betty, a non-profit organization and online resource for locals looking to shrink their impact on the environment. Every month, Betty—Kent’s ’50s-housewife-meets-earth-goddess alter ego—answers the most burning eco- questions from our readers about energy use, water, waste and recycling, transportation, and green buying. Q: I’m bad about checking my tire pressure. […]