Looking at the financial situation of think tanks, different funding patterns can be found. While financial contributions from foundations play an important role especially for conservative think tanks, also contributions from governments are made to certain institutions. Yet one of the most important funding sources are corporate donors and individual contributors. Although the extent to which - in most cases conservative - think tanks rely on corporate funding varies, from the US$ 158 million spent by the top 20 conservative think tanks, more than half of it was contributed by corporations or businessmen.
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b., March 3, 1847, Edinburgh
d. Aug. 2, 1922, Beinn Bhreagh, Cape Breton Island, Nova Scotia, Canada
American audiologist and inventor wrongly remembered for having invented the telephone in 1876. Although Bell introduced the first commercial application of the telephone, in fact a German teacher called Reiss invented it.
For more detailed information see the Encyclopaedia Britannica: http://www.britannica.com/bcom/eb/article/1/0,5716,15411+1+15220,00.html