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Wall Street Sinks as Tariff Jitters and AI Volatility Rattle Investors

U.S. stocks tumbled in a broad sell‑off today, with the Dow Jones Industrial Average plunging roughly 800 points as renewed tariff concerns and a wave of AI‑related volatility shook market confidence. The S&P 500 and Nasdaq also slid sharply, extending a week of choppy trading driven by political uncertainty and rapid shifts in tech sentiment. Investors reacted to escalating fears that new tariff measures proposed by President Trump could disrupt global supply chains and pressure corporate earnings. Tech stocks—already sensitive to policy shifts—were hit particularly hard as traders unwound positions tied to what analysts have dubbed the “AI scare trade,” a fast‑moving rotation away from high‑growth names. Market strategists noted that the combination of geopolitical tension, policy ambiguity, and stretched valuations created a perfect storm for a sharp pullback. Still, some analysts argue that the downturn reflects a recalibration rather than a fundamental shift, pointing out t...
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Alzheimer’s vaccines get a boost from new drug approval

 

After decades of disappointment and controversy, the field of Alzheimer’s disease research has finally seen a breakthrough with the approval of the first drug that targets the underlying pathology of the condition. 

Aducanumab, a monoclonal antibody that clears amyloid plaques from the brain, was granted accelerated approval by the US Food and Drug Administration in June 2021, despite mixed results from clinical trials and objections from some experts. 

The drug’s approval has rekindled interest in other therapeutic approaches that aim to prevent or slow down the progression of Alzheimer’s, such as vaccines that stimulate the immune system to attack amyloid or tau, another protein that accumulates in the brains of people with the disease. 

Several vaccine candidates are currently in various stages of development and testing, and some researchers are optimistic that they could offer a more effective and convenient way to treat Alzheimer’s than infusions of antibodies.


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