'You still can alter your behavior to reduce your carbon footprint. In particular, make sure you don’t ride a bike when you could drive a car. How’s that? Well, the people at Phyics.org thought the sandwich-climate topic was important enough to get access to the full text of the original article. They pass on this particularly interesting tidbit: A bacon, sausage, and egg sandwich (the whole Hampton Inn breakfast buffet in one tidy package) has a carbon footprint “equivalent to CO2 emissions from driving a car for 12 miles.”
Driving a car uses energy that comes from gasoline. Riding a bike uses energy that comes from the bicyclist’s food. Both sources of energy have carbon footprints. We are told CO2 emissions from the life-cycle process of producing a sandwich is equal to that of driving a car 12 miles. The question, then, is how far will the calories in that sandwich take you on a bike? ...
The bicyclist would need to eat 1.3 sandwiches to go 12 miles. That is, the CO2 footprint of riding a sandwich-fueled bike would be 30 percent higher than driving a car.
Global Greening: Indeed, satellite data suggests the world has mostly “greened” in the past few decades, which scientists partly attribute to extra carbon dioxide emissions put into the atmosphere through fossil fuel combustion. One reason is that carbon dioxide is an essential plant food. Farmers and growers have for decades pumped carbon dioxide into greenhouses to enhance plant growth. That’s one argument some skeptics make in the face of global warming alarmism. Scientists on the CO2 Coalition, a nonprofit, publicly argue that higher atmospheric CO2 concentrations are more of a benefit than a burden. One of their members, scientist Craig Idso, has catalogued a slew of studies pointing to the benefits of more atmospheric CO2. “And beyond this very real benefit to human health from increasing temperatures, the extra CO2 has helped to increase crop yields so as to improve food security,” Idso told TheDCNF.