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

Why can't I fall asleep?

Why is getting to sleep much harder for some people than others?

• 28 mins

Is red sky at night really sailor’s delight?

Just how reliable is this common weather proverb?

• 27 mins

Is my yoghurt really alive?

Local culture and local cultures at the Sofia Science Festival in Bulgaria

• 26 mins

Can eating honey help save bees?

Bee populations are declining - could eating honey help support them?

• 26 mins

What on earth is quantum?

A CrowdScience guide to quantum physics

• 30 mins

What’s that background hum I hear?

We explore the science behind hums – phenomena of persistent, low noise

• 28 mins

Was there an idyllic time before carnivores?

Was there ever a time when life on earth was peaceful? No predators, no prey, just vibes?

• 26 mins