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Employed by ad tech companies to track where you go on the web, cookies have been used since the mid-’90s by truckers and others to create a profile of your internet buying habits.

Amazon on Oct. 16 said it was investing in small nuclear reactors, coming just two days after a similar announcement by Google, as both tech giants seek new sources of carbon-free electricity.

In the past, Google has tried emulating Amazon.com Inc.’s online retail and delivery services, with little luck. Now the search giant is positioning itself as a kind of anti-Amazon, a free marketplace for merchants and Amazon rivals that’s designed to get consumers more comfortable shopping with Google.

DETROIT — Ford Motor Co. announced Feb. 4 that Google is joining the automaker’s effort to transform a once-dilapidated Detroit train station into a research hub focused on electric and self-driving vehicles.

Google asked the U.S. Federal Aviation Administration for permission to test drones to research how the technology can help monitor and control fires.

Waymo on March 6 began selling the laser-mapping sensors used on its driverless vehicles to other companies — as long as the customers don’t compete with its core robotaxi business. The sensors, known as lidar, shoot lasers off objects to determine what is nearby.

Walmart Inc. has quietly withdrawn from one of Google’s marquee efforts to challenge Amazon.com in e-commerce.

FORT MYERS, Fla. — Shippers are looking for collaborative transportation partners willing to understand their specific business challenges and work toward solving their current and future needs, a panel of experts said at a sales and marketing conference June 12.