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A Friday Letter: Vaccines, Brain Scans, and a Wild Day on Wall Street
Ayden Noh
November 06, 2026
Hi friend, happy Friday. The heart of today’s news is hope: new vaccines are going into an active outbreak, and doctors are getting a longer head start on Alzheimer’s. Grab your coffee, because there’s a lot to catch up on.
🌟 The Top Story
Vaccines Head Into the Ebola Fight
The WHO has cleared the first Bundibugyo Ebola vaccines, including candidates from Moderna and Oxford, to enter an efficacy trial while the outbreak is still active. That matters because there is no licensed vaccine for this strain, and testing in the field is how we learn what protects people. It’s a hopeful step, and researchers will be watching the results closely.
Quick Hits
Nasdaq Takes a Tumble: The index dropped more than 5% on fears of data center bans, with Texas having frozen approvals before the election result came in.
A 12-Year Head Start on Alzheimer’s: A Stanford brain scan study spotted Alzheimer’s risk up to 12 years before symptoms show up, which could give families far more time to plan.
Glasses Go Android: Samsung’s Android XR glasses open for pre-orders on November 12, and this explainer covers what to know before you buy.
Trouble Above the Clouds: The Space Force has confirmed on-orbit weapons, after Russia’s Cosmos 2612 spent five weeks shadowing a Ukrainian satellite. Read More →
🤖 AI
The Bug Hunter Gets Sharper: OpenAI’s GPT-6 Cyber found 81 Firefox vulnerabilities and 948 Linux exploits, a big moment for security teams.
Longer Clips, Fewer Slip-Ups: Google’s Gemini Omni 1.2 Flash debuts with longer AI video clips, better editing, and fewer errors.