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What makes an effective protest?

Also, a smiling robot, landfill methane emissions, and the perfect temperature for humans.

• 28 mins

Sun, sea... and science

Misunderstood seagulls, ice cream chemistry and the science of sun safety.

• 28 mins

Wimbledon Grass Science

Could white paint help tackle climate change? And 'synthetic embryos' for research.

• 28 mins

Should Antarctica be off limits?

Also, we dip into the Seine’s Olympic clean-up, and is Flying Ant Day really just one day?

• 28 mins

CERN’s Supercollider Plan

Is the 17 billion Euro project worth it?

• 28 mins

How much of a risk is space junk?

Also, sex before sport and how oceans influence how hot it is.

• 28 mins

Going for gold

Turning e-waste into jewellery and the genetics of a gold medal Olympian.

• 28 mins

Beavers of London

As beaver kits arrive in London, we ask if we should bring wilderness back to UK cities.

• 28 mins

Why aren’t we eating more insects?

We try some cricket tacos – and ask what role insects might play in our future diets.

• 27 mins

Predicting everything

Also, the latest on Alzheimer's drugs and how we work out Paralympic classifications.

• 30 mins

The Grenfell cladding

Why was the Grenfell Tower cladding so dangerous?

• 28 mins

The first civilian spacewalk

Also, the science of what we do with our nuclear waste and why.

• 27 mins

Is lab-grown meat the future of food?

From how it's made to farmers' perceptions, a deep dive into the edible innovation.

• 30 mins