Daily MailEarth's 'pulse' of geologic activity happens every 27.5 million years, says studyJun 21, 2021Jonathan ChadwickBy Jonathan Chadwickmore_vert
EurekAlertThe Earth has a pulse -- a 27.5-million-year cycle of geological activityJun 18, 2021more_vert
Livescience.comEarth has a 'pulse' of 27.5 million yearsJun 22, 2021Yasemin SaplakogluBy Yasemin Saplakoglumore_vert