For anyone who is interested...

http://www.sciencemag.org/webinar/

There are two or so lectures forthcoming and several available on demand from the past, you can interact live with the panel during the Webinar. If anybody is interested please go ahead and register for free.

thanks, but why the necessity to register? can't we just watch it?

You can watch them without registration 48 hours after it is done with, and is made available as an on-demand webinar, but this will mean you cannot interact real time with the panel (there is a built in method by which you can ask questions)

i see. now it makes sense. thanks.