How do we know what we know about dinosaurs? Riley Black takes us back to the Mesozoic Era and explains how paleontologists piece together the lives of dinosaurs from often fragmentary clues. Guest: Riley Black, science writer, amateur paleontologist, and consultant for the Juras ...Show more
When doctors don't know what's wrong
A 2015 review found that most people in the US will experience a diagnostic error in their lifetime. Some of those errors are less devastating than others, but how can we help people get better answers about their health? One family's search for answers with a mystifying illness ...Show more
Everyone knows about the Big Bang being the beginning of the universe and time - but when and how is it going to end? ask brothers Raffie and Xe from Rome. For this series, with lockdown learning in mind, Drs Rutherford and Fry are investigating scientific mysteries for students ...Show more
How big is the universe? And how do we know? It's a question that puzzled astronomers for centuries. They had no way to measure distance in space - until Henrietta Leavitt showed them how. Henrietta Leavitt was a "computer" in the 19th century, before there were computers, and sh ...Show more
A century ago, astronomers were locked in a debate about the scope of our universe. Were we it? The answer is no. There are other galaxies beyond the Milky Way, and they are speeding away from us. Answering that question left astronomers with an even bigger puzzle. Why is everyth ...Show more
What do scientists think is outside our universe? Asks Rebecca Standridge from San Francisco in the US. It’s a question which goes right to the limits of human understanding.We look for the answer using balloons, bubbles and the world’s oldest radio telescope.If you have a questi ...Show more