Marketing is becoming ubiquidous, I'd be probably seeing products or developing a saas application - but either without marketing isn't going to get very far.

A dolphin would be great, get a tow out to quite surf breaks or just to hang out in the water with.

My music tastes change day by day, not really sure how to answer the question, so I do what I do when I'm not sure about something - use google. According to some random online quiz my anthem would be "Hyper Hyper" by Scooter(?) - well that was an interesting listen.

Not sure the validility of this as a "world problem" but helping to educate kids to code would be the one. Coding as it's highest level is about solving problems. Empowering kids when they are at their most malleable with skills that are going to be essential in the future - will allow them to pursue and contribute to solving the big problems with the world in the future.