Volume 583 Issue 7816



News Features

News & Views

Hard evidence from soft fossil eggs p.365

It is thought that dinosaurs laid hard-shelled eggs, whereas ancient marine reptiles gave birth to live young. However, new discoveries of fossilized soft-shelled eggs challenge these long-held tenets of reproductive evolution.

doi: 10.1038/d41586-020-01732-8

A race to determine what drives COVID-19 severity p.366

Efforts are ongoing to find which human or viral factors underpin whether a person with COVID-19 will develop severe symptoms. Clinical evidence linked to two viral lineages now provides key insights into this enigma.

doi: 10.1038/d41586-020-01915-3