Samsung Electronics Co., the world’s biggest smartphone maker, joined on Thursday a growing list of companies that are promising to increase their use of solar and other renewable energy to help curb global warming.

Google is banning the development of artificial-intelligence software that can be used in weapons, chief executive Sundar Pichai said last week, setting strict new ethical guidelines for how the tech giant should conduct business in an age of increasingly powerful AI.

The CEO of Taiwan’s Foxconn, which assembles Apple iPhones and other products for tech companies, said Wednesday that Washington’s dispute with China is over technology rather than trade.

De Beers, the diamond giant that for years has promoted gemstones as pricey and precious, said it will begin selling man-made diamonds that cost about a tenth of the price of a mined gem.

Joyce Brenny, chief executive of Brenny Transportation in Minnesota, gave her truck drivers a 15 percent raise this year, but she still can't find enough workers for a job that now pays $80,000 a year.

President Trump has personally pushed U.S. Postmaster General Megan Brennan to double the rate the Postal Service charges Amazon.com and other firms to ship packages, according to three people familiar with their conversations, a dramatic move that probably would cost these companies billions of dollars.

Apple, the largest publicly traded company in the world, joined a major collaboration last week that could change how it gets one of the key components that makes its ubiquitous gadgets look so sleek: aluminum.