A few terrific science talks I've heard recently:
1) A Biography of Cancer- Terry Gross of Fresh Air interviews oncologist Siddhartha Mukherjee.
2) The Man Who Killed Pluto - OnPointRadio's Tom Ashbrook talks to astronomer Mike Brown and astrophysicist Neil deGrasse Tyson about why Pluto has been relegated from the league of planets and some other frontiers of astrophysics.
3) Science Sees Further - Ira Flatow of Science Friday talks with Richard Holmes and Sir Martin Rees about the contribution of the Royal Society to science and its history and future.
Dissemination of scientific knowledge for improving public understanding of science with scientists playing the role of advocates and popularizers was a theme that Sir Martin Rees emphasized quite strongly in the talk.
Not long ago scientific societies did not always approve of scientists turned popularizers. Carl Sagan was infamously refused membership of the National Academy of Sciences, some say because of his public profile as a popular science writer and TV personality despite his excellent credentials as a research scientist.
The tide seems to be turning with scientific societies now actively engaging in science outreach in the number of ways.. take for example the recent meeting of the American Geophysical Union where a science blogging workshop and social media meetings are being held for exploring ways to strengthen the scientists connection to the public at large.
That is a good sign. Scientists should be talking more to the public about their work and its significance to society.