This week's new questions
12 February 2020
Have we always known our heads are where thinking happens, and what causes radio interference. If you know, tell us
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Premium
Water effect: Why is it hard to put on gloves when your hands are wet?
12 February 2020
Water often reduces friction between surfaces, so why is it harder to put on gloves when your hands are wet?
Running on empty: Is runners' second wind real?
12 February 2020
Runners often say they experience a second wind. Is it real, and if so, is it physical or psychological?
