LifeCoronavirus lockdown changed how birds sing in San Francisco The uniquely quiet circumstances of the covid-19 restrictions in San Francisco saw birds respond by lowering their pitch, singing sexier songs and making their songs clearer News
91É«Ç鯬We must not become immune to the pandemic's heavy death toll The world is on track to soon exceed a million deaths from covid-19. It is a number we shouldn’t become blasé about Leader