The ETF industry has been credited with bringing exotic asset classes and investment strategies within the reach of all levels of investors. But it has also provided a potentially better way to invest in asset classes and industries that have historically exhibited significant volatility. Because the ETF structure provides immediate diversification of holdings at a [...] Related Stories: Solar ETFs Off To A Not-So-Bright Start Is China Sending Solar ETFs To A Blackout? Do You Need A Solar ETF?