The world awoke to the need to combat global heatingWas 2019 the year people finally started to listen to climate scientists on global heating? Meanwhile, the science of genome editing and its application in both the field and clinic are progressing rapidly. Martin Rees, Astronomer RoyalThe kilogram was redefined using quantum physicsFacebook Twitter Pinterest The standard international mass of a kilogram was redefined last month using quantum theory and caesium atoms. Photograph: Alamy Stock PhotoThere have been so many “significant” science stories in 2019 that I have been spoilt for choice. Jim Al-Khalili, professor of physics and public engagement in science at the University of Surrey and presenter of The Life Scientific (BBC Radio 4)

Source: The Guardian December 22, 2019 15:00 UTC