Sam Altman’s Home Attacked, AI Uncovers Hidden Ozempic Side Effects, Anti-AI Rage Goes Mainstream

Today we’re covering the biggest AI stories of April 13th, 2026. A 20-year-old who believed AI would end humanity threw a Molotov cocktail at Sam Altman’s San Francisco home before being arrested outside OpenAI’s headquarters — followed by a second attack days later — with Altman responding in a personal blog post calling the fear “justified” and admitting the industry’s power struggle is unlike anything society has navigated before. Penn researchers published a study using AI to analyze over 400,000 Reddit posts about Ozempic and Mounjaro, surfacing side effects like menstrual irregularities, chills, and fatigue that clinical trials largely missed — showing how AI can now listen at a scale no human research team could. Plus, the U.S. Treasury Secretary and Fed Chair summoned Wall Street CEOs to an emergency meeting over cybersecurity risks posed by Anthropic’s Mythos model, and a community workflow from a woman in Ontario who spent two years suffering from chronic back pain before AI finally pinpointed the root cause and built her a recovery plan — and at 3.5 months in, she’s nearly pain free.