A reader's spouse is upset by the "if it's yellow, let it mellow" policy. Umbra says hold it right there.
An eco-conscious backpacker wonders what to eat. Umbra goes foraging for answers.
A reader frets that taking long baths may be bad for the planet. Umbra says she's in hot water.
A reader needs help clearing her driveway. Umbra digs deep for an answer.
A reader wonders whether single-serving coffee can be green. Umbra brews up an answer.
These students want to green up their study habits. Umbra gives them the Cliffs Notes.
A reader discovers that his credit card company is funding dirty energy. Umbra looks out for the planet's best interest.
A reader is feline unsure about buying a new, fuel-efficient car. Umbra says it's better to make the leap, and she's not lion.
A reader wants to blow off some steam. Umbra says don't waste your energy.