Four years from now, the annual amount of e-waste generated worldwide is predicted to be 33 percent more than the 49 million tons generated in 2012, according to The Independent.

The U.S. leads all other countries, generating 9.4 million tons of e-waste each year, while China takes the No. 2 spot with 7.3 million tons. Much of the waste is dumped in poorer countries -- like Ghana, Nigeria, Pakistan, Vietnam and China -- where there are no facilities to handle it.