Big Think: Bill Nye | Can We Desalinate Water for Human Consumption on a Massive Scale?
TED Ed: This is Sparta | Fierce warriors of the ancient world – Craig Zimmer
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To give blood is probably something that most of us think is quite unpleasant and when its difficult to find a decent vein, it can be even worse.
Using this gizmo called VeinViewer it may be easier to find a vein.
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