One ton of circuit boards from old e-waste can contain 100 times more gold than a ton of mined gold. Now, scrappers like Wade Crawley in Sydney, Australia, are cashing in. He's partnered with Mint Innovation, a company that invented a safer and cleaner way to recover precious metals from electronics.
In 2007, Israel set up blockades around the Gaza Strip, claiming that many everyday items could also be used to make weapons.