Commodities have gotten crushed over the past few months.

The widely followed CRB commodities index has fallen by 20%. Many individual commodities have fallen even farther: Copper and crude oil have fallen 30% from their highs this year... Silver is down 40%... Even gold is down over 15%.

To help make sense of these moves, the Daily Crux team sat down with Rick Rule, founder of Global Resource Investments. Rick is one of the smartest, most successful resource investors in the world.

In the interview, Rick explains the recent moves in resource markets, including why you should expect more of the insane volatility we've seen this year. He also covers which commodities he thinks are a great buy today, which ones he's still bearish on, and one commodity he says could be "the most undervalued commodity of all."

When you sign up for this free interview, you'll also receive the Daily Crux Home Delivery.

Each day, the Crux team sifts through the top financial newspapers, magazines, journals, newsletters, blogs, shareholder letters, and research reports. We select only the most valuable news, ideas, and opinions for inclusion on the Crux website. Home Delivery puts it all in your inbox.