Expand chart
Data: PwC Billionaire Database, UBS and PwC analysis; Chart: Harry Stevens/Axios

The wealth of the world's billionaires rose by $1.4 trillion in 2017, the largest annual increase ever.

The details: Nearly all of that increase was driven by the Asia-Pacific region, and specifically China, where billionaire wealth rose 39%. The region minted three new billionaires a week over the course of the year. 701 billionaires are over the age of 70, accounting for nearly 40% of the wealth in the chart above.

Go deeper

Bryan Walsh, author of Future
47 mins ago - Science

The murder hornets are here

A braver man than me holds a speciment of the Asian giant hornet. Photo: Karen Ducey/Getty Images

Entomologists in Washington state on Thursday discovered the first Asian giant hornet nest in the U.S.

Why it matters: You may know this insect species by its nom de guerre: "the murder hornet." While the threat they pose to humans has been overstated, the invading hornets could decimate local honeybee populations if they establish themselves.

Biden is highest-spending political candidate on TV ads

Joe Biden. Photo: Sean Rayford/Getty Images

After spending an additional $45.2 million on political ads this week, former Vice President Joe Biden has become the highest-spending political candidate on TV ads ever, according to data from Advertising Analytics.

By the numbers: In total, the Biden campaign has spent $582.7 million on TV ads between 2019 and 2020, officially surpassing Michael Bloomberg's record spend of roughly $582 million. Biden's spend includes his primary and general election advertising.

Get Axios AM in your inbox

Catch up on coronavirus stories and special reports, curated by Mike Allen everyday

Please enter a valid email.

Subscription failed
Thank you for subscribing!