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Back in Black: Creating positive changes by focusing on a short-lived pollutant

HumanNature

This balance describes how much energy is being reflected back into space versus how much is being absorbed by our atmosphere; a positive change in the balance indicates that we’re taking more energy in (net warming) and a negative balance indicates that we’re reflecting more energy out (net cooling). References Arctic Council. June 25, 2020.

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Physics World announces its finalists for the 2021 Breakthrough of the Year

Physics World

To Sebastian Klembt of the University of Würzburg , Germany, Mordechai Segev of the Technion-Israel Institute of Technology, and colleagues for creating an array of 30 vertical cavity surface emitting lasers (VCSELs) that behave as a single coherent light source, paving the way for large-scale, high-power applications.

2021 145
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Quantum entanglement of two macroscopic objects is the Physics World 2021 Breakthrough of the Year

Physics World

Quantum technology has made great strides over the past two decades and physicists are now able to construct and manipulate systems that were once in the realm of thought experiments. Experiments between 2009 and 2012 fell well short of reaching ignition and so researchers went back to the drawing board to make improvements.

2021 145