environment
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Earth’s global oceans cover approximately 71% of the planet, roughly 3.6×10^8 km squared. It has been estimated that if humans find an efficient way to harness at least 0.2% of the potential energy within wave power and tidal power, enough energy would be generated to power the entire world. Ocean power has been utilized by humans for hundreds of years and is one of the oldest forms of energy known to us. For example, tide mills and water wheels have been used successfully to power farms, homes, factories, and electricity.
Ocean Energy: Tidal and Wave Power | ESW Renewable Energy Study
ecotourism
Chief Seattle's Speech of 1854 - Version 1
Version 1 (below) appeared in the Seattle Sunday Star on Oct. 29, 1887, in a column by Dr. Henry A. Smith.