Did monkeys really sail the oceans on floating rafts of vegetation? Is there a grand unified theory of snowflakes? What can fragrant whale excretions tell us about ancient oceans?

All in our famous Christmas issue, available on newsstands now! 🐒https://t.co/MqmZbnHioz pic.twitter.com/7FIfCoXntt

— New Scientist (@newscientist) December 17, 2021