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  1. Astronomy

    Carbon-ring molecules tied to life were found in space for the first time

    Two types of polycyclic aromatic hydrocarbons in the Taurus Molecular Cloud are far more abundant than predicted.

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  2. Health & Medicine

    New drugs that block a brain chemical are game changers for some migraine sufferers

    Drugs that block a brain chemical called CGRP are helping some patients who suffer from migraine pain.

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  3. Readers weigh in on brain technology, black holes and more

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  4. Living with pandemic uncertainty, Year 2

    Editor in chief Nancy Shute looks back at a year of COVID-19 coverage and living with the pandemic.