I have just bumped into the very technological savvy Royal Institution of Australia. This seems to be a powerful source of useful scientific information available to the general public and includes many fantastic resources, with many of them being online.
One of their fantastic initiatives is their book club. Unfortunately, I don't think this is online, but for those in Adelaide you can regularly go along to the Science Exchange to participate in these book club sessions. For those of us not in Adelaide, the RIAus website (past events) lists the books to be discussed each session and this provides us all an opportunity to seek out some great science reads.