What you might have missed

The process of Earth’s oxygenation, the growing number of Near-Earth asteroids and a bio-inspired gel – here are some highlights from a week in science. 

It looks like being a busy end to 2019 for asteroid watchers.
A hunting scene panorama discovered inside a cave in Sulawesi, Indonesia. Credit: Adam Brumm, Ratno Sardi, Adhi Agus Oktaviana