Testicular cancer is also known as germ cell tumor and is of two kinds - seminoma or nonseminoma. About 40% of testicular cancer are seminoma type and the other are divided into four sub-types choriocarcinoma, teratoma, embryonal carcinoma and yolk sac tumors...

The eye on the wall spots the selfish gene. A simple experiment in a typical office kitchen takes us inside the human mind, writes Ian Sample. HONESTY may well be the best policy, but it often deserts us when no one is watching, psychologists say. Experiments with an honesty box to collect payments for hot drinks reveal that people are better at paying up when under the watchful gaze of a pair of eyes. The surprise is that the eyes were not real, but photographed. The finding, which researchers believe sheds light on our evolutionary past, could be turned to practical use.