Stocks Plummet Amid Tariff Uncertainty and AI Fears

A tumultuous Monday on Wall Street saw stocks plummet as investors struggled to come to terms with President Donald Trump's latest tariff proposals and the growing impact of artificial intelligence on the market. The Dow Jones Industrial Average closed 823 points lower, or 1.66%, its worst day in a month, while the S&P 500 fell 1.04% and the tech-heavy Nasdaq Composite sank 1.13%.

The market's downturn was sparked by Trump's announcement over the weekend that he would hike tariffs to 15% on imports into the United States via different legal authority, following the Supreme Court's decision to strike down his previous tariffs. The move has created uncertainty and confusion among investors, leading to a decline in stocks and a rise in gold prices.

However, it's not just tariffs that are causing concern among investors. The growing presence of artificial intelligence in the market is also causing jitters, with many experts warning of the potential disruption it could cause to various industries.

In other news, a breakthrough in medical research has been hailed as a major step forward in the diagnosis of Alzheimer's disease. A recent clinical study has shown that a simple blood test can accurately diagnose the disease with a 94.5% success rate, significantly improving on the current diagnosis method. The test measures levels of a protein called p-tau217 in the blood, which has been shown to be a reliable indicator of the disease.

Meanwhile, in the world of technology, a new project has been unveiled that showcases the power of CSS. X86CSS is an x86 CPU emulator written entirely in CSS, capable of running a C program compiled into native 8086 machine code. The project's creator plans to write a blog post explaining how it works and the tricks used to achieve this impressive feat.

For those looking for a distraction from the turmoil on Wall Street, the New York Times has released its latest puzzles, including Pips and Connections: Sports Edition. Pips is a unique take on dominoes, while Connections challenges players to find the common threads between words.

As the market continues to grapple with the implications of Trump's tariffs and the rise of artificial intelligence, investors will be keeping a close eye on developments in the coming days. One thing is certain, however: the future of the market is uncertain, and only time will tell how these factors will play out.

Sources:

• "Blood test boosts Alzheimer's diagnosis accuracy to 94.5%, clinical study shows" (Science X)
• "NYT Pips hints, answers for February 24, 2026" (New York Times)
• "NYT Connections Sports Edition today: Hints and answers for February 24, 2026" (New York Times)
• "Show HN: X86CSS – An x86 CPU emulator written in CSS" (Show HN)
• "Dow tumbles more than 800 points as tariff uncertainty and AI disruption fears" (Reuters)