As population is growing tremendously, the need for land also grows. Cutting the trees is the only way to build new house, if the plot we have is full of trees. One thing we forget is, as the number of people increase, the amount of carbondioxide we expel, also increases. Trees are the ones which uses it for photosynthesis. Instead of keeping this fact in mind, we cut more and more trees daily. This will eventually harm us for sure.

Lackner director of Lenfest Center for Sustainable Energy,has proposed artificial trees to suck carbon out of the air. The trees suck in carbon dioxide for storage under the ocean-floor in disused oil or gas fields.

There is a saying  which tells, “We need to even learn from kids”. The whole idea came from Lackner’s daughter who wanted to do a science project during her 8 th Grade.Claire was able to successfully demonstrate that carbon dioxide (an acid) can be captured from the air in an acid/base reaction using a fish pump and sodium hydroxide (a very strong base). The father-daughter pair discovered that the rudimentary device captured half of the carbon dioxide that ran through the test tube. This simple demonstration won Claire first prize in the science fair and pushed her father onto a research path that could revolutionize the way we approach combating climate change and global warming.

Such trees could be planted anywhere. A small one could sit like a TV on the lawn to balance out the CO2 emitted by one person or family. A large tree, the size of a barn, could sit in the open air, near repositories for easy transportation and storage of carbon. Klaus Lackner estimates that some 250,000 such trees worldwide would be needed to soak up the CO2 produced by human activity annually.