Welcome to the first international edition of Science Weekly. Podcasting live - sort of - from Toscanini's ice cream store in Boston, Alok Jha and James Randerson round up all the news from this year's annual meeting of the American Association for the Advancement of Science (AAAS).
In this extended programme, we discuss the future of food technology - are you ready to eat GM corn flakes or cloned hamburgers? Steven Squyres from NASA's Mars rover missions tells us about the next steps in exploring the red planet. Futurist and inventor Raymond Kurzweil explains why he believes technology can solve all the world's problems - from the energy and environment crises, to disease and even poverty.
Also in the show, we ask, is the controversial biologist Craig Venter good for science, or just an evil genius? Plus, we explore the science of ice cream; discover why sharks could be on the verge of extinction; and reveal why chickens cannot go deaf.