Mr. Green breaks out his calculator to determine which veggies use water more efficiently.
If you burn brush it releases carbon dioxide, but if you let it decompose it produces methane.
Small composting bins aren't durable and can be prone to flies, so what's an urbanite to use? Mr. Green has the answer.
Rooftop gardens--sometimes called green roofs--are a trendy topping for buildings, but there's a greener option.