The biggest upgrade to the U.S. weather-radar network in 15 years gets rolling this winter with a minimum of fanfare—debuting under the radar, as it were. But the new capabilities should get their fair share of attention in the long run.

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Atmospheric science has lost one of the last living links to its formative era. Joachim Kuettner—the eminent researcher, administrator, field project leader, and glider pilot—died on 24 February at the age of 101.