Why exactly do we age? Do different species age at different rates, and - time for the Big Question - can we STOP ageing?

Ever wonder where our feline friends came from and how long they have been by our sides? A team from Oxford University, is using ancient cat DNA from archaeological sites to find out, following cats on a journey through time

Happy New Year! If you've made a new year's resolution to lose weight or have a healthier lifestyle in 2020, then this episode of the Big Questions podcast is for you!

Oceans cover more than 70% of the Earth's surface, yet only 15% of the ocean floor has been mapped in detail. Much remains unknown, including the location of potentially hundreds of thousands of seamounts (underwater mountains), which can be hazardous to navigation. Scientists at the University of Oxford are working with others to compile the most comprehensive analysis of the ocean floor yet.

We know it as the home of Father Christmas, but why is Lapland of interest to geologists? Join us in our festive episode as we find out why the minerals found in the region are important, and what it's like to be a field scientist in the frozen north...

The placenta is a fascinating organ, which allows communication between mother and foetus through the release of bubble-like vesicles. Could the messages within these vesicles provide an early warning of diseases such as gestational diabetes and preeclampsia?

Back to the Future II led us to believe that we'd all be zipping around on hoverboards by now, so where are they? We ask Dr Clara Barker, and learn about superconductors along the way...

When it comes to sensing potentially-dangerous vapours, sniffer dogs are still considered the gold standard. In this animation we learn about chemiresistive sensors, a new type of sensor that may be able to match the noses of our furry friends...

If we could travel inside our body, shrinking down to a cellular level, we could see how amazing our immune system really is...