1. Percent reduction in mortality for people who regularly commute by bicycle compared with people who do not cycle to work: 40%
  2. Factor by which health benefits outweigh the risks of cycling: 20
  3. Dollars per minute that the U.S. sends overseas to buy oil products: $200,000
  4. Dollars per gallon of gas in U.S. government subsidies for petroleum: between $4.60 and $14, or $558.7 billion to $1.69 trillion per year
  5. Distance a bicyclist can travel on the energy of one egg: 1 mile
  6. Energy, measured in eggs, it takes to walk the same distance: 3 eggs worth of energy
  7. Energy required for a loaded bus to carry passengers 3 miles: 2 dozen eggs per person
  8. Energy required for a train to carry passengers the same distance: 3 dozen eggs per person
  9. Energy required for a car that gets 12 mpg to move 1 person 3 miles: 7 dozen eggs

Sources: 1, World Health Organization, Charter on Transport, Environment and Health, 1999; 2, British Medical Association; 3, David Friedman, Testimony before the Senate Commerce Committee (November 6, 2001); 4, International Center for Technology Assessment; 5-9, International Bicycling Fund.
Compiled by Chris Weeks