Human evolution is often told as a tidy story of adaptation, yet some of our most familiar body parts still defy straightforward explanation. From the jut of the human chin to the curve of the outer ...

Leonardo da Vinci’s study of human anatomy combine scientific exploration with expert artistry. Leonardo da Vinci resumes his investigation into human anatomy, merging rigorous scientific exploration ...

Your kidneys are like filters. Your brain is like a computer. Your digestive system is like a tube. Your hands are controlled a bit like a marionette. These comparisons exist in part because doctors ...

overall: 27.3 cm x 22.1 cm; 10 3/4 in x 8 11/16 in overall, folded: 5 3/8 in x 8 7/8 in; 13.6525 cm x 22.5425 cm ...