Ever since Cronus the Titan tried to swallow his son Zeus, parents have feared being supplanted by their children. (It didn't take.) But it's only in the last few generations, as the rate of technological progress has accelerated, that children have grown up in a world significantly different from the one their parents knew, and it's only very recently that parents have seen their surpass them while they were still in the single digits. Thanks to digital media, the world is changing so rapidly today – consider that five years ago there was no Twitter, ten years ago no Facebook and fifteen years ago no Google – that even those of us who spent our childhoods programming our parents' VCRs can feel left behind.

What colour is an Airbender? If this question is not at the top of your mind, it's because you haven't been following the controversy surrounding the casting of the film The Last Airbender, set to premiere in early July. The question of ethnicity in the film's casting casts a valuable light on many of Hollywood's decisions when it comes to race and gender – and the attitudes and assumptions that underlie them.

This winter the Olympics return to Canada for the first time since the Calgary games of 1988. For many people, the most vivid memories of that Olympiad are the colourful stories of some of the less accomplished athletes, such as British ski jumper Michael “Eddie the Eagle” Edwards and the members of the Jamaican bobsled team. It's unlikely, though, that there will be any charming underdogs in this year's Olympiad, as the games become more and more the province of professionals. As audiences and advertising revenues drop, however, will the professionalization of the Games spell their downfall?

Larry Gonick is a pioneer of non-fiction cartooning; starting with Blood From A Stone: A Cartoon Guide to Tax Reform in 1971, he has made a career out of explaining complicated topics in comic format. In 1978 he published the first issue of The Cartoon History of the Universe as a comic book, starting with the Big Bang and ending with the evolution of humanity. Issues of that series were collected first in 1982 and again in 1990; later two sequels appeared, The Cartoon History of the Universe II and III, and in 2007 the series continued as The Cartoon History of the Modern World. With the second volume of that series, published this fall, Gonick brings his history up to late 2008. Throughout the series Gonick has consistently made history entertaining and approachable as well as accurate (each volume ends with an annotated bibliography) and has shed light on the history of often-neglected parts of the world such as China, India and pre-Columbian America. Among his other works are The Cartoon History of the United States and the Cartoon Guide series, which provide grounding in topics ranging from physics to communication theory to sex; his works have been among the most influential in bringing comics into the classroom.

The most anticipated movie of the year, at least in some circles, is opening on March 6th: Watchmen, the adaptation of the 1986 comic book of the same name. The original, which won a Hugo Award for science fiction and was named one of Time's top 100 novels of the twentieth century, tells the story of a group of retired superheroes investigating the death of one of their colleagues; the mystery leads the reader through the alternate world their existence has created, in which heroes with cosmic superpowers overawed the Soviet Union and in which Richard Nixon is still president in 1985. Though time will tell how successful the film will turn out to be, the buzz around its launch gives an opportunity to look at comics and how they're adapted into other media.

One of the great achievements of the Internet has been to put all kinds of information at the fingertips of millions of people. From online encyclopaedias to search engines, some of the most successful online services have been ways of providing answers to people's questions. It's not surprising, then, that more and more young people are relying on the Internet to answer their questions about that most uncomfortable of topics: sex. Some people, in fact, have even suggested that the Internet makes those awkward, politically troublesome sex ed. classes irrelevant. In the age of Google, is sex ed. necessary?