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A freelancer is a self-employed person who offers his or her services to multiple clients setting his own rules and price. And the freelance business is mostly run by the single person, who needs to manage his sales, marketing, and services on his own. If you happen to be one then here are the few tips to boost your business with the help of content marketing.

Energy independence is still only a hypothetical goal for the U.S., but the owner of a tiny island off the coast of Connecticut says he has already achieved that feat and is offering his work as a model. Dean Kamen, inventor of the Segway and numerous medical devices, jokingly refers to his North Dumpling Island as an independent nation and himself as Lord Dumpling. Kamen claims to have his own currency and offers visas to visitors to the tiny island a few miles from Mystic, where he is the only resident.

Lonnie Johnson has some impressive hard science credentials. He's worked for the Strategic Air Command and for NASA's Jet Propulsion Laboratory, outfitting missions to Mars, Jupiter and Saturn. He holds about 100 patents, many of them in that arcane spot where chemistry, electricity and physics cross into the marketplace. And his latest invention appears to do the impossible: generating electricity with no fuel and no moving parts. But he's still known as Mr. Squirt Gun. Even among the geniuses who gathered to honor him and his new thermo-electrochemical converter at a "Breakthrough Awards" banquet in Manhattan this month, the Atlanta scientist's new invention was ignored when his most famous device was revealed.

Mike Gering, CEO of the start-up Global Solar, picks his way along his factory floor, tracing the convoluted path that his thin-film solar panels follow from birth to shipping truck. The raw materials the workers carry are ultra-thin sheets of flexible plastic, which are then coated with a series of chemicals--indium, gallium, diselenide--that allows the module to turn sunlight into electricity.

T. Boone Pickens, a conservative billionaire who made his money in oil, is creating strange bedfellows with his aggressive plan for renewable energy such as wind power and natural gas. Last month, he held two conference calls with more than 27,000 members of the Sierra Club to talk up the plan. The environmental group, with some reservations, is on board. Last week, he met with Al Gore. Today, he is scheduled to be on the University of Michigan campus, selling his ideas to students. He said he expects a packed house.

DOVER, Mass. - On a recent sunny afternoon Bob Loebelenz pauses to gaze 72 feet into the air at the spinning blades of his wind turbine, a small "clean, free electricity" smile creasing the corners of his mouth. While giant wind turbines that supply power to utilities sprout along ridgelines across the United States, far smaller residential wind generators, like the one Mr. Loebelenz erected in 2003 to power his suburban Boston home, are still unusual in densely populated places.