The reason that it is the #1 choice is that Tylenol is effective, inexpensive, does not require a prescription, and safer than the non-steroidal anti-inflammatory medications such as Aleve* (Naprosyn, naproxen sodium), Advil (Motrin, ibuprofen), and others.
A CLEC is a mini telephone company. CLEC stands for Competitive Local Exchange Carrier. The telecommunications act of 1996 had provisions in it designed to spark competition between local and long distance telephone carriers.
Ocean thermal energy conversion. Ocean thermal energy conversion (OTEC) uses the temperature difference between cooler deep and warmer shallow or surface seawaters to run a heat engine and produce useful work, usually in the form of electricity. OTEC can operate with a very high capacity factor and so can operate in base load mode.