Nowadays environmental protection is very important for human beings, ecological problems are serious and perturbing. It really is important to save our environment from negative impact. First of all, nature is our main home and it’s a duty to keep it safe and sound. In my opinion the most serious environmental problem is air pollution. By reason of modernization there are a great number of factories, incineration plants, cars, power stations which keep making dangerous emissions. Polluted air leads to a problem of global warming and extinction different species of animals. Also it hurts people’s health. To help nature go through it and reduce emissions we need government’s support. But me and my classmates can do something too: for example, we can walk by ourselves without using transport and plant trees.