He gave a number of examples, including Operation Popeye, a top-secret program during the Vietnam War to seed the clouds with silver iodide crystals to accelerate the monsoon season and wash the Viet Cong away. In 2008, during the Olympics, China seeded the clouds in order to have it rain outside of the Olympics. Many countries have weather modification programs. The economy, trade, war and everything else is dependent on the weather. Dr. Kaku said that the US is experimenting with trillion-watt lasers that are pulsed and produce more energy in a split second than all of the nuclear energy plants on Earth. It only lasts for a brief second of time, but in that brief moment, raindrops can be created.