Tuesday, 21 May, 2013

Classroom Activity Page: The poles are fascinating, partly because they are such difficult places to visit, work and live. They still guard many mysteries that we’d like to unravel, including the survival of polar animals, the history of ancient peoples, and the understanding of Earth’s climate.

Classroom Activity Page Without soil, we starve. Unfortunately, throughout the world, human activities have degraded dirt, endangering our ability to feed a growing population. How can we save our soil and get ourselves out of a food crisis?

Classroom Activity Page: Each year, as influenza season approaches, medical authorities must scramble to predict which strains of flu will be most important, and then grow enough vaccine to inoculate the population. Why does this take so much time, and what are some alternative strategies that might speed the process?