Biological molecules are chiral. Like gloves, they have either left- or right-handed versions that can’t be superimposed on one another. Macromolecules like DNA are also chiral and are exclusively made of building blocks with the same handedness.
People with congenital stationary night blindness, or CSNB, have normal vision during the day but find it difficult or impossible to distinguish objects in low light. This rare condition is present from birth and can seriously impact quality of life, especially in locations and conditions where artificial illumination is not available.
No one can blame Frank Clements if he spends some time catching up on his favorite pastimes watching TV shows on Netflix, reading and running, now that he’s back home from an ascetic research trip to the mountains of Japan.
By Christina Cook
Cosmologists have established that much of the stuff of the universe is made of dark matter, a mysterious, invisible substance that can’t be directly detected but which exerts a gravitational pull on surrounding objects.
A group of scholars at the University of Pennsylvania is working to make the skill of reading manuscript text a hallmark of the Japanese studies program at Penn.
There are about 4,000 alternative currencies in use around the world, and they vary widely. In Zimbabwe, a country with so much hyperinflation that it hasn’t had a national currency since 2009, people create colorful non-bank notes and barter for goods and services.
Franklin Allen of the Wharton School says Japan has a long-term debt problem and predicts financial stability if long-term government bond yields rise.