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  1. Planetary Science

    Uranus emits more heat than previously thought

    Uranus radiates more energy than it gets from the sun, two new studies find — just as Jupiter, Saturn and Neptune do.

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  2. Artificial Intelligence

    As AI advances, the meaning of artificial general intelligence remains murky

    AI models are growing ever-more capable, accurate and impressive. The question of if they represent “general intelligence” is increasingly moot.

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  3. Climate

    Some trees are coping with extreme heat surprisingly well

    Rising temperatures could reduce trees' ability to photosynthesize. Scientists are trying to figure out just how close we are to that point.

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  4. Health & Medicine

    Brain implants don’t change a person’s sense of self.