Once upon a time (around 300 million years ago), Earth was home to massive dragonfly-like insects and two meter long millipede-like creatures. Why did they die off? Guests: Ned Snelling, professor of experimental physiology at the University of Pretoria; Jon Harrison, professor o ...Show more
Dark matter and the end of answers
Five-sixths of all the matter in the universe is this invisible stuff called dark matter, and scientists barely understand what it is. So what happens if we can't answer arguably the biggest mystery in the universe? One physicist decided to quit because he started asking question ...Show more
The previously silent world of outer space is changing. In this audio tour around the Universe, Dr Lucie Green explores the sounds of space.Some sounds have been recorded by microphones on-board interplanetary spacecraft. Others have been detected by telescopes and sped up until ...Show more
Take a sonic tour of the universe - this time, deep into the cosmos. Some sounds are recorded sound, others are data that have been sonified. Originally broadcast 7 July 2015.
The previously silent world of outer space is getting noisier. Listen in to sounds recorded on board spacecraft and sonifications of space data. Originally broadcast 30 June 2015.