The provided text presents a summary of four different articles. **Airbnb is rolling out an AI customer service bot** in the US, with their CEO noting a significant reduction in live agent contact. Another article discusses a **University of California study showing a ketogenic diet combined with targeted drugs effectively eliminated pancreatic cancer in mice**, suggesting a potential new treatment avenue for humans. The text also highlights **Asics' upcoming launch of a lightweight, high-stack running shoe**, their lightest to date. Finally, the last article reports on **Jeff Bezos selling a substantial amount of his Amazon stock**, citing an uncertain business environment and his continued funding of Blue Origin as reasons.