Albert Einstein's theory of relativity is actually two separate theories: his special theory of relativity , postulated in the 1905 paper, The Electrodynamics of Moving Bodies and his theory of general relativity , an expansion of the earlier theory, published as The Foundation of the General Theory of Relativity in 1916.
Timber or Grey Wolf. Once the world's most widely distributed mammal, the grey wolf has become extinct across much of its former range and its present distribution is much restricted. Grey Wolf (Canis Lupus), Carpathian Mountains, Romania.
Endangered under Endangered Species Act. Today the eastern timber wolf survives in only three percent of its original home range in the U.S. The largest population exists in northern Minnesota. There are smaller populations in Michigan and Wisconsin. In the northeast U.S. ( New York and New England), wolves have been extinct for 100 years.