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Google's fruit fly brain map gets repurposed to play Doom, Mario 64

Google Research and HHMI Janelia released MaleCNS v1.0, a dataset mapping over 166,000 neurons from a male fruit fly's brain and nervous system, built by converting millions of 2D images into 3D neural reconstructions. Developers quickly began using the model outside its intended scientific purpose, wiring its simulated neurons to control games like Doom and Super Mario 64, where sensory input from game frames drives neural activity that translates into player actions.

Google's full fruit fly brain map gets put to work playing Doom and Mario 64

Google Research, working with HHMI Janelia Research Campus, published the first complete map of an adult male fruit fly's brain and central nervous system, called MaleCNS v1.0. The AI-assisted project stitched together millions of 2D images into a 3D model reconstructing more than 166,000 neurons. Within days, software engineers used the connectome data to train a simulated version of the fly's neural circuitry to play Doom and Super Mario 64.

Google launches WeatherNext 3 AI model with hourly, 5km-resolution forecasts

Google has released WeatherNext 3, an updated AI weather forecasting model that generates hourly predictions using live satellite observations rather than relying solely on historical data. The model can resolve certain variables like temperature and moisture at up to 5-kilometer resolution, a sharp improvement over its predecessor's 25-kilometer, 6-hourly forecasts.

Google and Technion find frontier LLMs often 'know' facts they fail to recall

A new study from Google Research and Technion shows that when models like GPT-5 and Gemini-3 hallucinate, the underlying fact is usually already stored in their parameters rather than missing entirely. The researchers found these models encode 95-98% of tested facts, but often fail to surface them during generation due to retrieval, not storage, limits. They propose 'fact-level profiling' to separate whether a fact is encoded versus reliably retrievable across different phrasings.