Edge.org  is a website that is definitely worth reading, and rightly enjoys being known as "The world's smartest website." It has a great form of online debate in which world experts, the most meritorious scientists, philosophers, entrepreneurs, are invited to answer a question. The get the year off to a good start, Edge asked the question: "What *Should* We Be Worried About". The answers are often quite abstract, drifting in the direction of loose discussion of broader, long-term problems. Some, however, relate to current problem that sooner or later will catch up to us.
…A long, but extremely nutritious and useful reading, which I recommend to all.