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Line 332: 20 November Astronomers report the use of a new powerful method, [[NIRSpec]] in [[adaptive optics]] (AO) mode ([[NIRSPAO]]), to search for [[biosignature]]s on [[exoplanet]]s.<ref name="EA-20181120">{{cite news \|author=W. M. Keck Observatory \|title=Exoplanet stepping stones - Researchers are perfecting technology to one day look for signs of alien life \|url=https://www.eurekalert.org/pub_releases/2018-11/wmko-ess112018.php \|date=20 November 2018 \|work=[[EurekAlert!]] \|access-date=21 November 2018 \|author-link=W. M. Keck Observatory }}</ref><ref name="AJ-20181120">{{cite journal \|author=Wang, Ji \|display-authors=et al \|title=Detecting Water in the Atmosphere of HR 8799 c with L-band High-dispersion Spectroscopy Aided by Adaptive Optics \|date=20 November 2018 \|journal=[[The Astronomical Journal]] \|volume=156 \|pages=272 \|number=6 \|doi=10.3847/1538-3881/aae47b \|bibcode=2018AJ....156..272W \|arxiv=1809.09080 \|s2cid=119372301 \|doi-access=free }}</ref> The [[World Meteorological Organization]] (WMO) publishes its latest Greenhouse Gas Bulletin, showing record high concentrations of heat-trapping greenhouse gases, with levels of carbon dioxide (CO<sub>2</sub>) reaching 405.5 parts per million (ppm) in 2017, up from 403.3 ppm in 2016 and 400.1 ppm in 2015. The WMO reports that "there is no sign of a reversal in this trend, which is driving long-term climate change, sea level rise, ocean acidification and more extreme weather."<ref>{{cite news \|title=Greenhouse gas levels in atmosphere reach new record \|url=https://~~public.~~wmo.int/ennews/media~~/press~~-~~release~~centre/greenhouse-gas-levels-atmosphere-reach-new-record \|date=20 November 2018 \|work=WMO \|access-date=22 November 2018 }}</ref><ref>{{cite news \|title=Climate-heating greenhouse gases at record levels, says UN \|url=https://www.theguardian.com/environment/2018/nov/22/climate-heating-greenhouse-gases-at-record-levels-says-un \|date=22 November 2018 \|work=The Guardian \|access-date=22 November 2018 }}</ref> 22 November **35 genes that predispose people to [[chronic kidney disease]] are discovered by scientists at the University of Manchester.<ref>{{cite news \|title=Revealed: 35 kidney genes linked to chronic kidney disease risk \|url=https://www.eurekalert.org/pub_releases/2018-11/uom-r3k111918.php \|date=22 November 2018 \|work=EurekAlert! \|access-date=22 November 2018 }}</ref>

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