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Hold up two pieces of cloth in front of the sun, one black and one white, and see for yourself which passes more light. Dark cloth can be very thin and still block light effectively. Re-emission of energy from darker colors may be a little faster but I think other factors (see below) are much more significant. And don't kid yourself into thinking people ...


Merino wool is amazing. There are many brands of merino wool underwear, such as Icebreaker and Ibex. It is simultaneously the coolest and warmest fabric I've encountered. It never smells (I wash mine every 10 wearings just because I feel obligated), it drys in minutes, and it wicks moisture like sheep evolved their fibers for millions of years (because ...

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