The problems worthy of explanation are those which seem to require an explanation. I tell my students at the Carleton School of Journalism in Ottawa science reporting can take them to virtually any topic that gets them started, makes their spine tingle or puts their teeth on edge. In doubtful moments I recall that the Greeks invented science basically as a kind of play. It is not a sin to have fun in class. As with all journalism, the main task is finding the human beings on the front lines of some conflict or quest.
Science can be a great source of drama.
There are just as many oversized egos in the world of research as in the news business. There is intense competition for money and prestige, and a sprinkling of outright fraud. Medical reporting often takes you to people in dire stress. Yes it is sometimes necessary simply to explain a technical problem, like software piracy or the millenium bug. Not every piece has to grab the emotions.