How easy is it to get off our fossil fuel habit? Could Britain live on its own renewables? How does our current energy consumption compare with our sustainable energy options? Professor David MacKay will offer a straight-talking assessment of the options. Popular myths will be dispelled, leaving you with a clearer understanding of the scale of the energy challenge. In association with SCI.

What is time? How much control do we hold over it? And why does it go relentlessly forwards, not back? Young cosmology researcher Andrew Pontzen introduces some of the most challenging and exciting ideas in physics, and in doing so takes us to the beginning of time itself

On todays Cambridge Science Festival podcast we look to the heavens and find out what to see in our night sky during the festival and we also find out about a 100 year project to create the largest Wetland in the East of England.

We also reveal what happens in our brains in the face of danger and analyse what happens to us when we see disturbing images.

Why are there still so few women in the top levels of science? Dr Patricia Fara explores the past to examine old prejudices and reveal women’s vital but concealed contributions.

In today's cambridge Science Festival Podcast we learn why happiness may not be as important as we think, find out if it's possible to die from a broken heart and discover the effect emotions have on our health.

We also find out why we find jokes funny, a method of successful speed dating and reveal the magic of 3D glasses.

On todays Cambridge Science Festival Podcast we learn what our brains are made of and find out whether it's really possible to travel in time by looking into the science behind Dr Who.

We also learn how we can use skateboards to understand maths, find out the science of beer, discover spoons that clean themselves, and hear Festival patron Carol Vorderman's thoughts on the festival.

On todays highlights we reveal the processes in

our brains that enable us to form memories. We find out how soon

we'll be able to ditch the beach and head out of this world

for our holidays.

We'll also find out what school groups have learned about the science of sport and answer todays festive question.

On today's Cambridge science festival podcast we find out the best solutions to kick our fossil fuel habit and meet our energy needs in the future. We also find out that ancient architects were also scientists as we investigate the acoustics of Venetian renaissance architecture. We'll also see what school groups have been up to during the festival and answer your festive questions.

Dr Tom Hynes describes the physics of

why aircraft are noisy before

discussing the results of the recent Silent

Aircraft Initiative - a collaborative effort

between the University of Cambridge,

MIT and others - showing, with the aid

of demonstrations, how novel aircraft of

the future could be a great deal quieter.

In the first of the Cambridge Science Festival podcasts we find out a bout a BIG experiment taking place in East London and reveal new roles for testosterone in the human mind. We also find out where to go in the festival to find out your carbon footprint and discover a natural way to reduce carbon dioxide levels in our atmosphere.

We will also be answeringthe questions you've always been curious about in our Festive Questions as well asgive you a heads up on what to look forward to during the rest of the festival.