内容摘要：Tourists observe as a polar bear walks along the shoreline of Hudson Bay, Tuesday, Aug. 6, 2024, near Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

Tourists observe as a polar bear walks along the shoreline of Hudson Bay, Tuesday, Aug. 6, 2024, near Churchill, Manitoba. (AP Photo/Joshua A. Bickel)

The losses came amid a relatively calm day of mostly mixed trading. They follow several weeks of gains that helped the market wipe away its losses since the ongoing trade war began.The S&P 500 fell 36.29 points, or 0.6%, to 5,650.38. The decline broke the benchmark index’s longest winning streak since 2004.

The Dow Jones Industrial Average fell 98.60 points, or 0.2%, to 41,218.83. The Nasdaq composite fell 133.49 points, or 0.7%, to 17,844.24.Technology companies and other big stocks were among the heaviest weights on the market. Apple slumped 3.1%, while Amazon fell 1.9% and Tesla slipped 2.4%.Berkshire Hathaway fell 5.1%. Legendary investor Warren Buffett announced over the weekend that

by the end of the year after six decades at the helm. Buffett will still be chairman of the board of directors.The AP’s Seth Sutel reports stocks stumble to start the week.

The OPEC+ group of eight oil producing nations announced over the weekend that it will raise its output by 411,000 barrels per day as of June 1.

U.S. crude oil prices fell 2% to $57.13 per barrel. Many producers can no longer turn a profit once oil falls below $60. Prices are down sharply for the year over worries about an economic slowdown. The energy sector led the losses within the S&P 500. Exxon Mobil shed 2.8%.Swiss aviation pioneer Bertrand Piccard, center, Raphael Dinelli, left, Climate Impulse engineer and co-pilot, and project manager Cyril Haenel speak in front of the wings of the Climate Impulse, a plane powered by liquid hydrogen, at the press presentation of the project in a hangar in Les Sables d’Olonne, France on Thursday, Feb. 13, 2025.(AP Photo/Yohan Bonnet)

The controlled release of liquid hydrogen from ultra-insulated tanks under the airplane’s wings produces energy that seeps into the membrane of a fuel cell that powers the plane.“The plane has the wingspan of an Airbus 320: 34 meters (about 110 feet). It weighs 5-1/2 tons and it flies at 180 kilometers per hour — that means 100 knots at 10,000 feet (3,000 meters) altitude,” Piccard said Thursday.

One aim is to draw on energy from the “turbulence section” of the atmosphere, which airlines could also use one day to help save fuel, he said.Because it’s hydrogen, the only emissions will be water vapor. Still, outside experts caution that the environmental impact of such water-vapor “contrails” remains unknown in a real-world or large-scale scenario.