What 40 years as Observer science editor has taught Robin McKie

RFK Jr’s mixed messages on vaccines

Is ‘de-extinction’ really possible?

Evidence of alien life, a clue about the rise of bowel cancer, and a new colour?

Why did Just Stop Oil just stop?

Why did Spain and Portugal go dark?

How old are we really? What a test can tell us about our biological age

Surviving 200 snake bites, decoding ancient scrolls and the countries ‘flourishing’

Have we got the appendix all wrong?

Is it time to try geoengineering?