Once conducted almost entirely on dry land, the hunt for biochemical and pharmaceutical resources is shifting to the world’s oceans. This program examines various phases of that research—algae and sponge extraction around the globe, the growing utilization of toxic substances produced by some marine organisms, and the practical application of treatments and cures that are often a dozen years in the making. With its ethical discussions about animal testing and the prerogatives of developing countries, Sea Changes provides a balanced and comprehensive look at a fascinating vanguard in undersea exploration. (50 minutes)

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