Archive for July 2020

Kate Kelland LONDON (Reuters) – COVID-19 lockdowns worldwide led to the longest and most pronounced reduction in human-linked seismic vibrations ever recorded, sharpening scientists’ ability to hear earth’s natural signals and detect earthquakes, a study found on Thursday. FILE PHOTO: A working seismograph is shown in a display about earthquakes during the Great ShakeOut Earthquake…

A microphone outside the window measures the incoming noise so that an array of two dozen speakers can cancel it outSpeakersAn array of 24 speakers can quiet city noise by as much as closing the window (NTU Singapore)By Theresa MachemerSMITHSONIANMAG.COMJULY 14, 2020 Living next to a busy street or constant construction makes opening the window…