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Nikki Haley will quit as U.S. ambassador to the United Nations at the end of the year, President Donald Trump said in a surprise announcement Tuesday. The ex-governor of South Carolina sought to downplay speculation she might harbor presidential aspirations: “I am not running in 2020,” she said at the White House, with Trump at her side. 

Here are today's top stories

A major U.S. telecom discovered manipulated hardware from Super Micro Computer in its network, fresh evidence of how critical technology components bound for the U.S. were tampered with in China.

Google showed off a deluge of new products aimed at competing with the latest gadgets from other big tech rivals. The company also announced it would not compete for the Pentagon's cloud-computing contract, saying the project may conflict with its corporate values.

Hurricane Michael is forecast to become the second major hurricane to make landfall in the U.S. in a month. It's now a Category 2 storm. 

Nursing home residents are spending more time in rehabilitation treatment, subjected to potentially unnecessary therapy that reaps significant financial benefits for cash-strapped facilities, a study shows.

It's easy to get worked up about driverless cars and pilot-less planes, but the future of transportation is already here. It's called railroads.

The $220 billion rout of Tencent has entered uncharted territory: The Internet giant lost more market value than any other company this year.

What's Joe Weisenthal thinking about? The Bloomberg news director is watching Visa and Mastercard, simply because they're decent indicators of consumer health. And lately, they've been looking ugly. If you're feeling bearish, it's worth keeping an eye on the degree to which these names continue to lag the market.

What you'll need to know tomorrow

What you'll want to read tonight

Of all the things San Francisco has brought into the wider world, few have been as big and curious-looking as Ocean Cleanup’s System 001. Black, snakelike and 2,000 feet long, its expected to spend a year gathering as much plastic as possible from a remote garbage patch in the Pacific Ocean. The company hopes to prove that setups such as System 001 can, in great enough numbers, help rid the ocean of plastic by 2050. There’s just one problem, ocean scientists tell Bloomberg Businessweek: The device can’t possibly work on the scale imagined.

Your Evening Briefing

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