Unless you happen to be standing on a hilltop or swimming in the ocean right now, you are on a watershed. These unsung wonders of topography and hydrology are an important contributor to the rain cycle and yet we humans tend to abuse them.
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Selects: How Narcolepsy Works
52:41

Rope, yeah ROPE!
43:31

Short Stuff: Did a shipwreck double the size of the United States?
11:46