The Biggest Spender of Political Ads on Facebook? President Trump

A new study based on Facebook data provides a picture of who is placing political ads on the social network ahead of the midterm elections. President Trump tops the list.
The New New World: Latest Sign of China’s Slowdown: A Technology Cash Crunch

Long awash in money, the country’s start-up scene has seen an unprecedented downturn. That could be a bad sign for the rest of the Chinese economy.
Amazon’s Curious Case of the $2,630.52 Used Paperback

Booksellers on the online marketplace are charging thousands for books that normally sell for a few dollars. Authors are perplexed — and annoyed.
Inside the Mating Rituals of Brands and Online Stars

With deals collectively worth billions of dollars at stake, the pressure is on advertisers and viral performers on sites like YouTube and Instagram to find the right match.
Trilobites: 3-D Color X-Rays Could Help Spot Deadly Disease Without Surgery

A new medical scanner, derived from technology used by particle physics researchers at CERN, “is like the upgrade from black-and-white film to color,” one of its developers said.

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