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GENETICS: YOUR DNA IS TURNING UP IN PLACES YOU LEAST EXPECT IT

BBC Science Focus

|

June 2023

A new study reveals human DNA can be retrieved from almost anywhere and be used to identify you

GENETICS: YOUR DNA IS TURNING UP IN PLACES YOU LEAST EXPECT IT

We leave genetic traces of ourselves everywhere we go, through dropping dead skin and hair, sneezing and coughing, or flushing the toilet after we've used it. Now, scientists from the University of Florida found have discovered that not only can these DNA traces be retrieved from land, sea and air, but also that they're strong enough to be matched to individuals. The scientists found human DNA almost everywhere - in oceans and rivers, and buried in the sand of beaches.

FLERE HISTORIER FRA BBC Science Focus

BBC Science Focus

BBC Science Focus

DO I HAVE ALEXITHYMIA?

We can all struggle to find the words to explain ourselves, but if you regularly experience feelings that you can't identify, you might have alexithymia.

time to read

1 mins

October 2025

BBC Science Focus

BBC Science Focus

SHOULD I KEEP MY CAR KEYS IN A FARADAY BOX?

Potentially, yes. The invention of keyless entry means we can unlock our cars upon approach, something particularly helpful when you want to open the boot, but have your hands full of shopping.

time to read

2 mins

October 2025

BBC Science Focus

BBC Science Focus

SHOULD I START SNIFFING ROSEMARY?

Is there any truth to the Shakespearean phrase 'rosemary for remembrance'? Actually, yes.

time to read

1 min

October 2025

BBC Science Focus

BBC Science Focus

Groundbreaking footage captures hidden moment of human fertility

Observing the crucial step in human development could help improve fertility and IVF

time to read

1 min

October 2025

BBC Science Focus

BBC Science Focus

THE GIANT PHANTOM JELLYFISH

Conjure in your mind a giant, deep-sea predator, and I bet there's a colossal squid lurking in there, perhaps with an even bigger sperm whale chasing after it.

time to read

2 mins

October 2025

BBC Science Focus

BBC Science Focus

EDITOR'S PICKS...

This month's smartest tech

time to read

4 mins

October 2025

BBC Science Focus

BBC Science Focus

'Clearest sign' of alien life on Mars found by NASA

Strange 'leopard spot' markings on a Martian rock could finally be the sign we've been waiting for that alien microbes once lived on the Red Planet

time to read

4 mins

October 2025

BBC Science Focus

Human brains emit a bizarre glow

Subtle light shines through our skulls in patterns that depends on what we're doing

time to read

1 mins

October 2025

BBC Science Focus

BBC Science Focus

"Far from being the bad guy, cortisol is a hormone that's vital for our bodies and brains"

To complicate matters further, cortisol is also released in bursts, about every hour or so.

time to read

2 mins

October 2025

BBC Science Focus

BBC Science Focus

HOW MANY ORGANS COULD I SURVIVE WITHOUT?

The annals of medical history prove that the average human meat sack is surprisingly resilient.

time to read

1 mins

October 2025

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