One of the ways our ears can differ is in the presence of what’s known as Darwin’s tubercle, a small bump on the outer ear that's thought to be an evolutionary hangover. A 2016 study found ...

The tubercle bacilli isolated by Petroff's method from the sputum of 90 cases of pulmonary tuberculosis in man, of which 8 were incipient, 20 moderately advanced and 62 far advanced, were found to be ...