Another way would be to convert all passenger jets to hydrogen fuel. Burning hydrogen produces only water. While water vapor is a so-called greenhouse gas, the emission of water vapor from jets is usually called a contrail, a condensation trail. It is a long threadlike cloud.
And clouds reflect sunlight, cooling the Earth.
Of course, where would we get all that hydrogen? We would have to build many new nuclear power plants just for jet hydrogen. We might as well put them near the airports, and use them for both electrical energy production and hydrogen manufacturing.
Trees are useful, too. In addition to providing food crops, shade, and building materials, they stabilize soil and soak up carbon dioxide, making it easier to sequester it if you choose to do so. I'll take a few tons of sequestered carbon for my library, thank you.
Another way would be to convert all passenger jets to hydrogen fuel. Burning hydrogen produces only water. While water vapor is a so-called greenhouse gas, the emission of water vapor from jets is usually called a contrail, a condensation trail. It is a long threadlike cloud.Contrails and other cirrus clouds consist almost exclusively of ice crystals and generally exist or originate in areas of ambient temperature less than -36°C. In most formations and orientations, these ice crystals reflect light far more effectively in the infrared (terrestrial radiation) than in the visible (solar radiation) and consequently warm the earth. These clouds occur far more frequently than you might realize; thin cirrus often appears almost transparent to the human eye. Most stratus clouds by contrast cool the earth.And clouds reflect sunlight, cooling the Earth.