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The CO2 problem in six easy steps (2022 Update)

Real Climate

The fact that there is a natural greenhouse effect (that the atmosphere restricts the passage of infra-red (IR) radiation from the Earth’s surface to space) is easily deducible from; i) the mean temperature of the surface (around 15ºC) and, ii) knowing that the planet is normally close to radiative equilibrium. in IPCC TAR).

Radiation 352
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Scanning the cosmos for signs of alien technology

Physics World

There was also the Breakthrough Listen Candidate 1 (BLC1) radio signal observed in April and May 2019 by the privately funded Breakthrough Listen project at the Berkeley Search for Extraterrestrial Intelligence (SETI) Research Center at the University of California. While the WOW!

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Oil Refineries: A Deadly Industry

Union of Concerned Scientists

One good example of the nexus between global warming and local pollution is ground-level ozone. The 2019 explosion at the Philadelphia Energy Solutions (PES) refinery was in a unit which used hydrofluoric acid as a catalyst. To make matters worse, NOx contributes to the formation of ground-level ozone and secondary PM2.5,

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Seeing the Earth through alien eyes: an extraterrestrial view of our planet

Physics World

The lines form a chemical fingerprint that could be used to find “biosignatures” such as oxygen or ozone. This often unpredictable level of electromagnetic radiation can hide an intriguing signal or give false positives for potential biosignatures. 2019 ApJL 882 L1 , reproduced by permission of the AAS). Who are you looking at?