Elon Musk receives a golden key from Donald Trump in the Oval Office at the White House in Washington DC on 30 May 2025. Elon Musk receives a golden key from Donald Trump in the Oval Office at the White House in Washington DC on 30 May 2025. I myself have a cold. Today, we are looking back at the biggest stories in tech of 2025 - Elon Musk's political rise, burst, and fall; artificial intelligence's subsumption of the global economy, all other technology, and even the Earth's topography; Australia's remarkable social media ban; the tech industry's new Trumpian politics; and, as a treat, a glimpse of the apocalypse offered by one of Silicon Valley's savviest and strangest billionaires. Tesla CEO Elon Musk attends a memorial service for slain far-right commentator Charlie Kirk at State Farm Stadium, in Glendale, Arizona, on 21 September 2025.

As demand for artificial intelligence technology boosts construction and proposed construction of data centers around the world, those computers require not just electricity and land, but also a significant amount of water. Data centers use water directly, with cooling water pumped through pipes in and around the computer equipment. They also use water indirectly, through the water required to produce the electricity to power the facility. The amount of water used to produce electricity increases dramatically when the source is fossil fuels compared with solar or wind. A 2024 report from the Lawrence Berkeley National Laboratory estimated that in 2023, U.S. data centers consumed 17 billion gallons (64 billion liters) of water directly through cooling, and projects that by 2028, those figures could double - or even quadruple.

Hours after Tesla sued its former employee on charges he had stolen company secrets, and days after chief Elon Musk had called him a saboteur, the Silicon Valley automaker made a startling claim. The company had received a call from a friend of the employee, Martin Tripp, saying he would be coming to Tesla's Gigafactory battery plant in Nevada to "shoot the place up," according to a Tesla spokesman. But Tripp, who says he became a whistleblower after seeing what he called dangerous conditions in the company's car batteries, told The Washington Post he had said no such thing. Emails exchanged that day between him and Musk, provided to The Post and confirmed by Tesla, show bitter words from both men but also Tripp saying he had "never made a threat." Tesla's claims, he said, are "absurd! Insane is a better word."

Tesla's Gigafactory in the Nevada Desert is finally nearing completion. Set to open on July 29th, it will have the largest footprint of any building in the world. The 5 billion structure will produce 500,000 lithium ion batteries each year to meet demand. When it's complete, Tesla's Gigafactory in the Nevada Desert will have the largest footprint of any building in the world. At the Model 3 launch yesterday, founder Elon Musk said the 5 billion structure will produce 500,000 lithium ion batteries annually to meet demand.