In 1868, the world’s first recorded bicycle race was held in St. Croix Park, France. 80 years later, the first bicycle independently developed by new China – “Flying Pigeon” bicycle was born in Tianjin in 1950. With the rapid growth of the number of bicycles in the world, bicycles have been used for a variety of purposes, from military operations in the first and second world wars to leisure, entertainment and sports. At the same time, bicycles have become daily necessities for ordinary people in many countries from an expensive luxury< Br > < div class = "height" > < / div > however, with the development of industrialization, the popularity of cars has compressed people’s demand for bicycles. Today, the transportation sector accounts for 1 / 4 of the global fuel related greenhouse gas emissions, and half of them come from private cars, including passenger cars and trucks< Br > < div class = "height" > < / div > cycling is considered to reduce greenhouse gas emissions, but bicycles only account for a small part of transportation in most countries. So, what is the potential carbon benefit behind the current global bicycle use? How did the development process between bicycle and automobile come into being< IMG ALT = "the number of bicycles per capita and the number of private cars per capita from 1962 to 2015. The countries where the trend lines are pointed out are the United States, Denmark, Italy, China and Angola. The figure is from the research team" style = "width: 600px;" src=" https://imagecloud.thepaper.cn/thepaper/image/213/488/898.gif ">
the number of bicycles per capita and the number of private cars per capita from 1962 to 2015. The countries of the trend lines are the United States, Denmark, Italy, China and Angola. The figure is from the research team