Super typhoons and the coming big one earthquake. This is what I think the best way to decrease the population in the world. The natural phenomena can do it in a twinkling of an eye. Natural calamities is the only way to do it if the people couldn't do such nuclear bomb. Or missile one country to start the decrease of population. This seems selfish idea but seems like true. Seems applicable but seems not right. People can make it through power and strength, it can be also by the natural calamities big and harmful effects will leave the people.