Can a revolutionary new telescope solve the mystery of planet nine?
Do medicinal mushroom products actually work?
Does the UK need nuclear to reach net zero?
How to Save the Amazon part three: ask the people that know – podcast
How to save the Amazon part two: the magic and mystery
How to save the Amazon part one: the stakes
Missing in the Amazon: the disappearance – episode 1
Into the photic zone: does a darkening ocean threaten marine life?
The incredible world of animal medicine
Your microbiome questions answered: part two
Your microbiome questions answered: part one
The extraordinary promise of gene editing
The latest twist in a Canadian medical mystery
Is it time to try geoengineering?
Have we got the appendix all wrong?
Surviving 200 snake bites, decoding ancient scrolls and the countries ‘flourishing’
How old are we really? What a test can tell us about our biological age
Why did Spain and Portugal go dark?
Why did Just Stop Oil just stop?
Evidence of alien life, a clue about the rise of bowel cancer, and a new colour?
Is ‘de-extinction’ really possible?
RFK Jr’s mixed messages on vaccines
What 40 years as Observer science editor has taught Robin McKie
Streams of medicines: how Switzerland cleaned up its act
Streams of medicines: what’s hiding in the UK’s waterways?
