Apptronik has risen in value from $15 million to $5 billion and now has Google DeepMind as a partner. There's a very big idea backing the robotics startup.

Google's Gemini chatbot sent a man on delusional journeys before encouraging him to kill himself. Now his father is suing over the death.

The tiny bots follow patterns of light and "artificial space-time," navigating like craft following the curved space around a black hole.