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

4/24/2025 • 20 min

Madeleine Finlay and Ian Sample discuss three intriguing science stories from the week. From a hint at alien life on a distant planet to a clue in the search for answers over why colon cancer rates are rising in the under 50s, and news from scientists who claim to have found a colour no one has seen before. Help support our independent journalism at theguardian.… Play episode

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?
‘Parasites should get more fame’: the nominees for world’s finest inverteb…
Keto: what’s the science behind the diet?
The rise and fall of DNA testing company 23andMe
Where do our early childhood memories go?
What a dark energy discovery means for the fate of the universe
A mysterious millionaire and the quest to live under the sea
Use it or lose it: how to sharpen your brain as you age
Mars-a-lago? Did the red planet once have sandy beaches?
Moon missions, Musk v scientists, sperm and longevity
Why it’s boom time for beavers in England
Drinks cans and chicken bones: will ‘technofossils’ be humanity’s lasting …
How Trump unleashed chaos in science
Singing mice, constipated kids and nurture beats nature: science stories o…
Should we ban cats?
What is ‘mirror life’ and why are scientists sounding the alarm?
Don’t look up: is an asteroid heading for Earth?
DeepSeek, weapons and climate? What’s on the table at the Paris AI summit?
Can Trump and RFK Jr make America healthy again?
Protein, weights and the best way to keep fit: your exercise questions ans…
Sugar, seed oils, and avoiding sickness: your health questions answered
The science of racism, and how to fight it
Telepathy…what’s the evidence?
Our science predictions for 2025
How weather ‘whiplash’ set the stage for the LA fires
Where did our attention spans go, and can we get them back?
Are we hardwired to commit ‘deadly sins’?
Revisited: does the evidence on glucose tracking add up?
Revisited: just how bad is alcohol for us?
Revisited: the endless sexual diversity of nature
Revisited: are the world’s oldest people really that old?
‘Soft and calorie dense’: Chris van Tulleken on how ultra-processed foods …
Is our model of the universe wrong?
Does Google’s ‘mindboggling’ new chip bring quantum computers any closer?
The science of laughing
Revisited: Secrets of the gut microbiome
What really helps with hangovers?
What’s going on with fluoride?
‘Travesty of justice’: Cop29’s controversial deal
The science behind yo-yo diets, bird flu news and which Brits can spot a f…
What does it take to become an astronaut?
Secrets of happiness: the happiness hacks backed up by science
Secrets of happiness: what makes a country happy?
What will Trump 2.0 mean for science?
Could we really live on Mars?

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