What are the benefits of a fish-rich diet, not only for nutrition and health but also for the environment, economies and sustainability? A new framework offers a way to assess the benefits and trade-offs on national and global scales.

Seemingly contradictory observations of the first known interstellar object are reconciled in a model that presents a simple and physically realistic framework for understanding the object’s many peculiarities.

Quantum information in superconducting processors is stored as low-energy microwave photons, but transmitting this information over long distances to build a quantum network requires conversion of low-energy photons to high-energy optical photons. Laser-cooled rubidium atoms now enable conversion between photons with vastly different energies.

Since 2008, population densities of shallow-reef fishes, invertebrates and seaweeds around Australia have generally decreased near the northern limits of species’ ranges, and increased near their southern limits. Endemic invertebrates and seaweeds that prefer cold waters showed the steepest declines, and are prevented by deep-ocean barriers from moving south as temperatures rise.