This week, how the climate has changed throughout history, and why enforcing vaccination should be done with care.

In this episode:

00:39 Climate through time

Researchers have modelled how climate has changed throughout the past 2000 years.

06:45 Research Highlights

Making a self-propelling liquid, and the benefit of laugh tracks.

08:35 Make vaccines mandatory?

Scientists have warned that enforcing vaccinations could backfire, so should be done carefully.

14:15 News Chat

The UK’s new prime-minister, and the launch of an Indian moon mission.

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25 July 2019: The history of climate change, and making vaccines mandatory

Nature Podcast