Why don’t sunflowers fall over?

With huge heads on spindly stalks, how do sunflowers defy gravity to stay standing?

• 26 mins

What's the fairest voting system?

Is there a perfect way to elect politicians?

• 32 mins

Why do my armpits smell?

Deodorant hasn’t been around forever, so is there any evolutionary reason for body odour?

• 26 mins

Why do languages fade from us?

Can learning multiple languages make us forget our native tongue?

• 26 mins

Why do some mushrooms glow?

We explore the mysterious phenomenon of bioluminescence

• 29 mins

Why is my house getting sunnier?

A mysterious shift in sunshine through one listener’s window requires investigation

• 30 mins

What does my voice say about me?

What shapes the sound of your voice? And is everybody’s voice unique?

• 31 mins

Why can't my dog live as long as me?

And how do some animals tackle the ageing process head on?

• 28 mins

Can I improve my sense of direction?

Why some people get lost while others have a great sense of where they are

• 29 mins

Why am I good at jigsaw puzzles?

What skills do you need to complete a jigsaw puzzle? And why do we enjoy them?

• 32 mins

Why does pain sometimes feel good?

What makes people seek out unpleasant or painful sensations, like eating chilli?

• 29 mins

Will the Earth ever lose its Moon?

Anand Jagatia is joined by a panel of experts to answer listener questions about the Moon

• 26 mins

I didn’t know that!

Did you know that flies fly in rectangles and fish hide by lighting themselves up?

• 26 mins

Why am I embarrassed when I fall?

Falling can be serious – so why do we find it embarrassing or even funny?

• 26 mins

Is beer better without alcohol?

How does non-alcoholic beer differ from the original - and is it better for us?

• 32 mins

Which animal has the biggest carbon footprint?

Humans emit far too much planet-warming carbon, but what about other species?

• 28 mins

How high can birds fly?

What altitude can birds cope with, and which species soars highest?

• 27 mins

Is my smartwatch good for my health?

Do smartwatches reliably monitor fitness? And can they make us healthier?

• 27 mins

Why can't I remember my early childhood?

Some huge milestones happen in our first years of life - but why do we forget them?

• 27 mins

Is anything truly random?

A question about bathroom tiles has us wondering whether everything is pre-determined

• 26 mins

Why isn't the sky green?

Why do we see so many colours in the sky, but never green?

• 27 mins

Whatever happened to tangerines?

Can we track down a tangerine variety lodged in one listener's memory?

• 28 mins

Is water wet?

The wetness of water seems obvious - but dive into the science and it's not so clear cut

• 26 mins

Are humans naturally monogamous?

Why is one partner usually the norm for humans around the world?

• 27 mins

Are there global food allergy hotspots?

Do food allergies vary around the world – and if so, why?

• 29 mins

Where in the world will I weigh least?

We tackle gravity - a fundamental force of the universe, yet also an everyday mystery

• 26 mins

How do you measure a mountain?

As sea levels rise, will mountains shrink? How do we measure height above sea level?

• 26 mins

Why do animals swallow rocks?

Answering your questions about life, Earth and the universe

• 29 mins

Why am I always late?

Why do some people find it easier to be punctual than others?

• 26 mins

Can we feed everyone?

We ask leading agricultural experts about global food security

• 31 mins