This woman just made ultramarathon history in 56-hour, 250-mile run in Arizona.
Rachel Entrekin won the Cocodona 250 outright in a 56-hour, 250+mile effort, beating the entire men’s field, setting a new course record, and marking a landmark moment in ultrarunning history.
Layers of AI
Artificial intelligence is not a single technology but a layered system where each level builds on the previous one. It starts with AI as the broad concept, moves into machine learning that learns from data, neural networks inspired by the human brain, and deep learning that powers vision, speech, and language.
On top of that comes generative AI, capable of creating text, images, and media, and finally agentic AI, which can reason, use tools, and act autonomously toward goals. Understanding these layers helps make sense of how modern AI systems work and where the future of intelligent technology is headed.