text: All through the world, people are trying to slowly save their environment by reducung car use. From one day to a whole year, everything helps to save our world. The German community of Vauban has made it nearly impossible to own a car. Paris, at one point, had to put restrictions on their driving. Columbia has an annual day of no cars. The US is working on lowering thier use of cars and dropping their average miles to help clear the air surrounding them. Even if it is walking from point A to point B, it helps the community and lowers air pollution.    Do you ever think that exploring a planet far from home is worth it? Astronauts take on the challenege to travel to Venus and to explore the mysteries of the planet. The author supports the idea of taking the challenge to Venus by stating that the planet is worth studying for regardless of what dangers pursue them.