With its ability to validate all transactions in an immutable electronic ledger, the blockchain has the potential to be as disruptive as Amazon was in the late 1990s. When the company went public in 1997, there were serious doubts whether people would willingly give up their credit card information just to buy a book. Since then, Amazon stock is up 8,000 percent, and founder Jeff Bezos briefly overtook Bill Gates in July to become the world’s wealthiest person.

For the first time since we’ve been keeping track, two separate Category 4 hurricanes struck the mainland U.S. in the same year. It should come as no surprise, then, that the combined recovery cost of Hurricanes Harvey and Irma is expected to set a new all-time high for natural disasters.

China put a halt to new ICOs and crypto transactions. In response, ethereum tumbled as much as 15.8 percent on Monday, or $55 a unit. Bitcoin lost $394 a unit.

The best call financial writer Geoffrey Caveney ever made was in December 2015. Gold hit a multiyear low of $1,050 an ounce, and he was convinced that the metal had found a bottom. It was time to make a trade, he thought, not just in bullion but precious metal miners, specifically the juniors and some micro-cap names.

Below are some key data points and estimates that help contextualize the severity of Harvey and its aftermath.

Here’s a news flash for you: Donald Trump is controversial and caustic. He says exactly what’s on his mind, no matter how incendiary, and he’s not afraid to make enemies, even with members of his party. ‘Bully’ is a word many people use to describe the 45th U.S. president.

I hope investors have taken steps to prepare for some potentially disruptive economic storms, including this weekend’s central bank symposium in Jackson Hole, Wyoming, and the possibility of a contentious battle in Congress next month over the budget and debt ceiling.

The second and final part of my exclusive interview with distinguished financial writer Alex Green of the Oxford Club and Investment U.

For more than a decade and a half, my friend Alexander Green has been educating and entertaining investors as editor of numerous popular newsletters, many of which I’ve cited in my own writing.

I think most of you reading this right now are aware that gold is unlike any other metal, certainly any other element. It doesn’t play by the same rules as iron or tin or aluminum, and its value has nothing to do with its utility—or lack thereof.