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  1. Archaeology

    Ancient Maya power brokers lived in neighborhoods, not just palaces

    Lidar discoveries and recent excavations are forcing archaeologists to rethink ancient Maya political structures.

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  2. Planetary Science

    Giant polygon rock patterns may be buried deep below Mars’ surface

    A Chinese rover used radar to reveal long-buried terrain that might hint that Mars’ equator was once much colder and wetter.

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  3. Archaeology

    A mysterious ancient grave with a sword and mirror belonged to a woman

    The items hint that she fought in or helped plan raids and defensive actions in what’s now southwestern England about 2,000 years ago, scientists speculate.

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  4. Climate

    A new UN report lays out an ethical framework for climate engineering

    The report’s release, which coincides with COP28, weighs the ethics of using technological interventions to mitigate climate change.