U.S. Global Investors [www.usfunds.com]

Explore the 8 Busiest Airports in the World

2014 was a banner year for the airline industry. Read the Frank Talk to find out which records were shattered. The airline is much more rational than it was 10 years ago. Find out in this Frank Talk. Cetain aircraft such as the C-17 require silver in it's construction. View our slideshow to learn more about the white metal.

Sources: Airlines for America, Airports Council International, airports-guides.com, flightstats.com, sunshineskies.com, gulfbusiness.com, thenational.ae, news.delta.com, heathrowairport.com