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  1. Astronomy

    Two exoplanet families redefine what planetary systems can look like

    The TRAPPIST-1 and TOI-178 systems, both home to multiple bunched-up planets, have densities and orbits that defy expectations.

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  2. Health & Medicine

    Nearly half a million U.S. children missed out on lead tests in early 2020

    A big drop in routine lead tests, which can identify children with elevated blood levels, is another troubling sign of the pandemic’s toll.

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  3. Animals

    A new chameleon species may be the world’s tiniest reptile

    The newly described critters, found in the northern forests of Madagascar, may be threatened by deforestation.

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  4. Neuroscience

    Famous brain sketches come to life again as embroideries

    A needlework project pays tribute to the iconic drawings of Spanish neuroscientist Santiago Ramón y Cajal.