How do electric fish make electricity?

CrowdScience listener Matt wants to know why he's warm blooded. He started thinking about this when he was watching some ants during the recent heatwave in Europe and wondered why their blood didn't boil. What are the pros and cons of being warm-blooded like us or cold-blooded re ...  Show more

Why is it hard to concentrate, and why does it feel like such hard work? The CrowdScience inbox is full of questions like that, so for this show we’re concentrating on concentration and focusing on how we focus. We’ll be answering questions about the extra energy the brain uses w ...  Show more

Right now, at this very moment, all across the planet, there are 7.6 billion human beings eating, breathing, sleeping, brushing their teeth, walking their dogs, drinking coffee, walking down the street or running onto the subway or hopping in their car, maybe reading a summary ...

What has most recently became known in some circles as "Thanos Theory", many people have wondered, especially in times of serious concerns about climate change and the scarcity of resources just how long this planet can support us...especially as the world's population is about t ...  Show more

At eight billion people, humanity has reached a major demographic milestone. Yet with a growing population, questions arise over whether nations can keep up. While developed Western countries struggle to take care of aging populations and low birth rates, many developing count ...

As India is poised to overtake China as the world's most populous country, we put questions from World Service listeners to the author of 8 Billion and Counting. Dr Jennifer Sciubba explains how the number of humans is growing in some countries, declining in others, how people ar ...  Show more