Introduces us to RNAi, a mechanism by which biologists "down-regulate" gene expression and observe the physiological consequences. A series of experiments demonstrate the power of RNAi in a model organism (roundworm C. elegans). Videos, animations, interviews with experts, and other materials are provided.
Sources: Cold Spring Harbor Laboratory, National Science Foundation
This integrated collection of charts and maps summarizes the conditions of the world's natural ecology and human cultures, their interactions, and impact on one another. The graphics conveniently illustrate the connections between apparently disparate topics: core statistics on forests, soil, fresh water and ocean fisheries are displayed side by side with statistics on climate change, carbon dioxide emissions, wealth and power, food supply and oil supply, military budgets, population density, and life expectancy...
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