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AI

AWS Open-Sources Dogwood, Extending Cedar to Govern Sequences of Agent Tool Calls

AWS has open-sourced Dogwood, a policy language extending Cedar with temporal conditions so rules can reason about an agent's prior tool calls rather than one request in isolation.

  • Dogwood, an open-source policy language, governs sequences of agent tool calls.
  • Unlike Cedar, Dogwood can evaluate actions in relation to the agent's past actions.
  • Dogwood integrates with AgentCore Policy and uses Apache 2.0 licensing.

Science

Copper's Surprising Melting Behavior Provides Insights for Future Fusion Power Plant Design

Phys.org reports: Future fusion power plants aim to recreate the heart of a star here on Earth to power our future energy needs.

  • Copper s crystal lattice melts gradually under extreme heat, unlike instant breakage
  • Breakthrough enhances simulations for evaluating fusion reactor materials
  • Electron camera captures atomic movements at a millionth of a billionth of a second
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