Quirks and Quarks

Apr 18: Age, sex and COVID-19 vulnerability, learning from pterosaur flight and more...

Earth Day’s odd birthday, and a super-dupernova

Earth Day’s odd birthday, and a super-dupernova

This image shows a reconstruction of the giant pterosaur Hatzegopteryx launching into the air, just after the forelimbs have left the ground. (Mark Witton)