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The concept of burning away tumors with electric current dates back a century, but it took modern imaging machines to make through-the-needle tumor-burning accurate enough to be safe and practical.
FORBES: Magazine Article
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Boasting an aluminum base, the Wooden Light Bulb is totally safe (although probably not that practical for actual lighting purposes) as LEDs, unlike incandescents, produce a very small amount of heat.
FORBES: Designer Unveils Wooden Light Bulb
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But it's just not practical, it's not possible, it's not safe for them to do that.
BBC: Obesity rates fall in Philadelphia