explodes the salt , which causes small water droplets to grow and to become rain ( S5 ).
There are 50 countries which use cloud seeding . China uses it the most .( S6 ) For instance , the Chinese used cloud seeding right before the 2008 Olympics and it worked . It has also worked for many other countries however some countries have experimented with it without success . The United States continues to experiment with different cloud seeding techniques .
Cloud seeding can help make rain , which can help agriculture , and survival , because about 700,000 people die from droughts each year ( S8 ), and if you multiply that number by 10 , that is the number of people who die from food shortages each year .( S9 ) Cloud seeding can help save many lives .
There are many unique pros and cons to cloud seeding , but we are going to start with the positives .
First , it can increase rain up to 40 %, ( S10 ) second it really does not have much environmental drawbacks ; even the silver iodine technique does not use enough to become a toxin . ( S1 )