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The energy value of a tree

An average full size deciduous tree evaporates 100 gallons of water during a sunny summer day, which uses up about 660,000 British thermal units (BTUs) of energy and cools outside a home as well as five average (10,000 BTU) air conditioners. “Energy Efficient and Environmental Landscaping” by Ann Simon Moffat, Mark Schiller, and the staff […]

Light when the power goes out

Observations Along with many in the Fayette and Shelby County areas today, we lost power. I took the opportunity to evaluate the amount of light we are getting at Greyhaven when it’s overcast and there’s no other source of light available. East facing office window: 10 lux. South facing living room window: lower, 120 lux; […]