Nowadays traveling by flying is considered one of the safest ways of travel. Planes have come a long way of upgrades to have a strong title of safety. As for emissions, flying used only 2,5 percent of the world's carbon emission yearly, and earlier studies show that only 10 percent of the world flies in most years. By 2019 annual world-wide passenger count was 4,56 billion people, but each year as the incomes rise, there’s a bigger demand for traveling and flights, resulting in an emission rate doubling.