Black pepper
Black pepper (Piper nigrum) is a flowering vine in the family Piperaceae , cultivated for its fruit , which is usually dried and used as a spice and seasoning . The same fruit is also used to produce white pepper, red/pink pepper, and green pepper. Black pepper is native to South more
Uranium
Uranium () is a white/black metal lic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 proton s and electron s, 6 of them valence electron s. It can have between 141 and 146 neutron s, with 143 and 146 in its most co more
Xenon
Xenon ( in the UK, in the US) is a chemical element that has the symbol Xe and atomic number 54. A colorless, heavy, odorless noble gas , xenon occurs in the earth's atmosphere in trace amounts. Although generally unreactive, xenon can undergo a few chemical reaction s such as the forma more
Prostate cancer
Prostate cancer is a disease in which cancer develops in the prostate , a gland in the male reproductive system . It occurs when cell s of the prostate mutate and begin to multiply out of control. These cells may spread (metastasize ) from the prostate to other parts of the bod more
Rachel Carson
Rachel Louise Carson (May 27 , 1907 – April 14 , 1964 ) was an American marine biologist and nature writer whose writings are often credited with launching the global environmental movement .
Carson started her career as a biologist in the U.S. Bureau of Fisheries , and t more