The Rundown — September 26, 2026

THE WORLD · SEPTEMBER 26, 2026

What's going on right now, in one place. The ↗ links out to the original source; the item's own text turns into a link only once it becomes a full entry here.

World

• China and the US agree on a $30 billion reciprocal tariff cut and launch a new AI dialogue as part of an eight-point consensus reached as Xi Jinping's three-day state visit to Washington concludes on September 25, with the two leaders pledging to meet at least twice more this year. ↗
• Bangkok's city government declares a flood disaster across all 50 districts on September 26 after nearly 300 millimeters of rain fell over 48 hours, with roughly 980 residents moved into temporary shelters and 36 bedridden patients transferred to hospitals. ↗
• The Palestinian Central Elections Commission opens registration on September 26 for candidate lists in the November 28 legislative election, the first such vote in the West Bank and Gaza since 2006, with registration running through October 7. ↗

Business & markets

• US stocks close out the week higher on September 25, with the S&P 500 up 0.51% to 7,743.41, the Dow up 478.64 points (0.93%) to 51,828.62, and the Nasdaq up 0.5% to 27,068.72, even as Treasury yields hold near two-decade highs. ↗

Bitcoin & crypto

• Bitcoin trades near $84,000 on September 26 as the total crypto market cap holds at $2.98 trillion (up 0.3%), the Fear & Greed Index reads 74 ("Greed"), and 24-hour trading volume runs $109.2 billion. ↗
• Crypto exchange Bitget confirms on September 25 that suspected North Korean hackers stole $351.6 million from its hot and warm wallets on September 24 via a spoofed-transfer backend compromise, freezing withdrawals while its cold wallets and a $464 million-plus user protection fund remain untouched. ↗

Technology

• Anthropic launches Claude Opus 5.5 on September 22 at $4 per million input tokens and $20 per million output tokens (down from Opus 5's $5/$25), and OpenAI answers roughly 90 minutes later with GPT-6 Sol priced at $2 and $10 per million tokens. ↗
• Security researcher Rasmus Moorats publishes two still-unpatched OxygenOS flaws on September 24 that let an app with no special permissions gain root access on a OnePlus 15, five months after reporting them to OnePlus on April 18 and receiving neither a CVE nor a fix. ↗

Science & space

• UBC researchers describe two sea spider species new to science from British Columbia's Salish Sea, the first found there in nearly a century, including the red-eyed, three-lipped Callipallene pilosuspedes, collected scuba diving to depths of 18 meters. ↗
• A Science Advances study led by LSU's Brandon Shuck maps a roughly 22-mile-long tear opening in the Cascadia subduction zone's Nootka Fault Zone off Vancouver Island, where the oceanic slab has already dropped about 5 kilometers, suggesting subduction zones can die piecemeal rather than all at once. ↗

Health & medicine

• A study tracking more than 113,000 people for up to 20 years finds a transient ischemic attack, or "mini-stroke," carries a 34% higher long-term dementia risk than no stroke at all, with about one in five TIA patients diagnosed with dementia within roughly seven years. ↗
• A Washington University-led phase 1/2 trial in 30 adults with AML or high-risk MDS finds that CRISPR-edited donor stem cells with the CD33 gene deleted engraft normally and let some patients tolerate CD33-targeted maintenance therapy afterward without prolonged, severe blood-cell suppression. ↗