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Photo by the Anchorage Museum
Incandescent vs. LED
These two bulbs produce the same amount of light, but use very different amounts of electricity to do it. The incandescent bulb on the right uses 100 watts of power to produce 1,600 lumens (or 16 lumens per watt). It would take 714 pounds of coal to power a similar bulb lit 24-hours-a-day for an entire year. The LED light on the left produces 150 lumens per watt - requiring only 10.7 watts of power, or 76.4 pounds of coal, to produce the the same amount of lumens of light 24 hours a day for a year.
Photo by the Anchorage Museum
Wood
Besides our own muscles and those of the animals we domesticated, wood was humankind’s very first source of energy. For more than 2 billion people who live in less developed places around the world today, wood remains the chief energy source for heating and cooking, and wood today provides about 6 percent of the world’s total primary energy supply.
Photo by Anchorage Museum
Emission Cubes
These cubes represent the average volume of CO 2 emitted daily through human activities in the United States, China, Germany, Brazil and Rwanda, as well as the average daily emissions for the planet’s entire population of 7.6 billion individuals.
Photo by Anchorage Museum
Emission Cubes - front
These cubes represent the average volume of CO 2 emitted daily through human activities in the United States, China, Germany, Brazil and Rwanda, as well as the average daily emissions for the planet’s entire population of 7.6 billion individuals.
