My sister just sent me a link to this fabulous world clock .
The host and creator poodwaddle.com claims to have designed it for the 'morbid curiosity' in us all. It is a little morbid, but also a great way to get an idea of the magnitude of many issues in the world including extinctions, deforestation, disease, birth and death rates and much much more. You can look at the figures for the year, month, week, day, or click 'now' to reset and see the what happens during the time you are watching or over the course of a lesson. A great resource to start a unit of work on some of these issues.
A similar 'earth clock' can be found at the bottom of this page and includes some slightly different data.