an important method for scientists trying to date surfaces that we cannot visit. One also can date city streets this way. A heavily pot holed pavement is almost always older than one that is not potholed, right?

About two-fifths of the moon we see from the earth is mare. It is the maria that create the silhouette figures we pretend to see on the lunar disk with the naked eye. For instance, Mare Serenitatis is the Man in the Moon's left eye, and Mare Imbrium is his right eye. These figures are harder to see during the glaring contrast caused by a full moon on a totally black sky. They are best picked out in a twilight sky.

"Maria" literally means "seas." These features were so named because early astronomersThis Renovated Historical Residence Features Tile Flowing From The Roof To The Courtyard

Photography by Wang Ning and Jin Weiqi

Han Wen-Qiang, founder and principal architect of ARCHSTUDIO, has designed the renovation of a Siheyuan, a historical type of residence in Beijing, that can now be rented out as an open urban public space for businesses, or families.

Through the front entrance, a red door guides you inside where you walk through a narrow pathway that opens up into an interior courtyard with multiple buildings surrounding it.

Photography by Wang Ning and Jin Weiqi

A wave of dark tiles appears to fall from the roof, down and through the courtyard. At night the curved path of tiles is lit from beneath, making it safe to walk in the dark.

Photography by Wang Ning and