The Federal Reserve (U.S. Central Bank) has been holding 0% interest rates for the last few years. This is creating an Interest Rate Bubble as assets eventually become inflationary from borrowing and spending money with no interest rate. While most will see this as a bad sign, there is also an opportunity to invest in hard assets for spectacular returns on investment!
I encourage you to research this on your own and form your own opinion. With that said, it is likely that the USD will also weaken "temporarily", causing a panic. When this happens, investors will look to monetary assets to protect and grow their wealth. These include Gold, Silver, Copper, Platinum, Palladium, and many more. Also, when precious metals are in high demand, it creates demand in the mining sector. I'll write more on mining stocks soon, but they will also see a major jump in price. When the current Bond Bubble we're in pops, it should expedite this effect even further.
Check out the links below to get more information on why 0% interest rates will create an economic bubble.