Japan and the nuclear nightmare looks at the aftermath of the earthquake that rocked Japan in March and at the desperate attempts to prevent a nuclear catastrophe. The uprising in Libya looks at the fighting and its impact on the rest of the world. Hockey and the concussion debate looks at the new studies on the effects of concussions on the brain and how they have reignited the debate about fighting and hockey. How Facebook changed the world looks at the rise of the social media giant and at the many ways it is changing the world.

"CBC news in review"--Disc title.

Japan and the nuclear nightmare -- The uprising in Libya -- Hockey and the concussion debate -- How Facebook changed the world.