Science journalist Bianca Nogrady and astrophysicist Dr Katie Mack answer your science questions.

Chris Smith and the Naked Scientist explore a potential new therapy for Multiple Sclerosis and last data from Cassini as it plunged into Saturn. In addition, we get to the bottom of how and why electric eels jump out and shock people and animals. Plus, can memories be faked and why are some sports can be linked with memory loss? Find out all this as well as the latest discovery on climate change. Download the podcast: bbc.co.uk/podcasts/5live

We're looking at the world of science and nature for the next hour in the company of science journalist Bianca Nogrady and astrophysicist Dr. Katie Mack.

The hottest science news, stories and analysis with Chris Smith and the Naked Scientists

Chris Smith and Kat Arney tackle: superbugs, Jupiter, and why your sense of smell might be better than you thought.

Science Journalist Bianca Nogrady and Astrophysicist Lisa Harvey-Smith answer your questions on the science phone-in. Topics discussed include the making of a hurricane and automation in the new age.

Naked Scientist, Chris Smith and a panel of top scientists answer you questions including: will an artificial intelligence take over the world? Why do smaller dogs live longer than larger ones? And why do some people get hay fever and others don't?

Joining Chris to answer these are; University of Cambridge stem cell biologist Sarah Harrison statistician, Simon White and mental health researcher Olivia Remes. Plus AI entrepreneur, Peter Clarke.

Dr Karls answers questions about moon phases, NASA's record on the Voyager space probe, and hydrogen cars.

Today we explore the ageing process and the fresh claim that bacteria in our gut could hold the key to ageing with fewer of the health problems that come with it.

Discover how humans had been using trigonometry before Pythagoras came up with his now, textbook formula. And could robot killers be on the way? Experts are raising fears about the rapid evolution of AI and robotics and are calling for the technology to be banned. We find out precisely why. And finally, can science save the human race from the kinds of catastrophic disasters insurers dread the most?

Dr. Karl takes your questions.