Far-sighted
On a safari holiday in Kenya, I was stunned by our local guide鈥檚 ability to see wildlife at a great distance and spot things that I could barely see with binoculars. Does visual acuity vary between human peoples?
John Wilkinson, Diss, Norfolk, UK
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Food Fatigue
I often feel tired after a large meal and I am told it is because blood 鈥渞ushes to the stomach to help with digestion鈥�. Is this actually what happens? How can the body regulate that?
Evan Slater, London, UK
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