Science has evolved over thousands of years of human enquiry to provide a rational basis for understanding and predicting what happens in the world around us.

We rely on science to enhance our standard of living, to keep us healthy and to address the problems and challenges that we face. Science has put men on the moon, probed distant planets, discovered DNA and cured disease.

And yet, there are many who still question the value and legitimacy of science which raises the question: when and why does science matter?

Four of the world’s most eminent scientists come together at ANU for one night only to discuss and deliberate on the biggest challenges facing the science community today. If you don’t think science matters to you, you may think again.

Professor Steven Chu was the co-recipient of the 1997 Nobel Prize for Physics. He has devoted his recent scientific career to the search for new solutions to our energy and climate challenges. In December 2008 Dr Chu was selected by then President-elect Barack Obama to serve as Secretary of Energy, a position he held until April 2013.

Professor Brian Schmidt AC is an Australian Research Council Laureate Fellow and astrophysicist at ANU. Professor Schmidt was jointly awarded the 2011 Nobel Prize in Physics for the discovery of the accelerating Universe.

Professor Lawrence Krauss is theoretical physicist and the author of several bestselling books, including The Physics of Star Trek and A Universe from Nothing. He is an advocate of scientific scepticism, science education and the science of morality.

Professor Lisa Randall studies theoretical particle physics and cosmology at Harvard University. Her research connects theoretical insights to puzzles in our current understanding of the properties and interactions of matter. Professor Randall was on the list of Time Magazine's "100 Most Influential People" of 2007 and was one of 40 people featured in The Rolling Stone 40th Anniversary issue that year.

Presented by http://physics.anu.edu.au & http://energy.anu.edu.au