I've quit living without artificial lights. I stepped on my glasses last night. I couldn't see them lying on the floor at all in my dark living room. As a matter of course, the glasses got broken. My foot got cut as well. I've got nothing but the scrapped glasses and foot injury from the natural light dogma.
I'm trying to live with the natural light. I mean I never turn lights on once the sun sets. I'm updating this article in my room, which is exactly as dark as the night outside. I'm looking at the screen in complete darkness.
Japanese are famous for their long life expectancy. Indeed, the oldest man, who has been officially registered in the Guinness Book of Records, is a 113-year old Japanese man. Now this country has thirty-two thousand, two hundred, and ninety-five people aged 100 or over. The number of centenarians has grown sharply. In 1963, it was only 153. About 1,000 in 1981, 10,000 in 1998, and 20,000 in 2003. It's over 30,000, as of today.
The first ever diamond in Japan found! It has been long believed that the country did not produce diamonds because the geological condition is not for the gem. 
I'm done with a general pathology exam! I'm pretty sure I've passed it (but not with flying colors). My favorite disease is retinoblastoma. It's really cool. You can google if you want to know more about it.