Key Points. 1  Skin cancer is a disease in which malignant (cancer) cells form in the tissues of the skin. 2  There are different types of cancer that start in the skin. 3  Skin color and being exposed to sunlight can increase the risk of nonmelanoma skin cancer and actinic keratosis.
Yi (êê ê¿ / Nuosuhxop) Yi is a member of the Loloish branch of the Tibeto-Burman languages spoken by about 4 or 5 million people in Sichuan, Yunnan, Guizhou and Guangxi in southern China. Yi, which is known as å½ in Chinese and Lolo in English, has six main dialects: Northern Yi (êê  - Nuosu), Western Yi (Lalu), Central Yi (Lolopo), Southern Yi (Nisu), Southeastern Yi (Nasu) and Eastern Yi (Nasu).
Sumerian language. Sumerian language, language isolate and the oldest written language in existence. First attested about 3100 bc in southern Mesopotamia, it flourished during the 3rd millennium bc. About 2000 bc, Sumerian was replaced as a spoken language by Semitic Akkadian (Assyro-Babylonian) but continued in written usage almost to the end of the life of the Akkadian language, around the beginning of the Christian era.