Giulio Tononi is the guy who's arguably brought the most interesting perspective on consciousness (information integration theory) since the original Chalmers' problem statement.
Here's him explaining why the problem is hard and how it could be approached, in the middle of some kind of artifical jungle: https://youtu.be/Vl8J3K_ZLkg?t=5m50s
Here's him explaining why the problem is hard and how it could be approached, in the middle of some kind of artifical jungle: https://youtu.be/Vl8J3K_ZLkg?t=5m50s