"As the price of energy soars, I am convinced wealthy countries will turn to the one remaining fossil fuel that is still in abundance: coal," notes growth stock expert Jim Powell.

The editor of Global Changes & Opportunities Report, "Given the high price of oil, the coal-to-liquid fuel industry is starting to take off. One company that should profit handsomely is Headwaters (NYSE: HW)." Here is his review.

"To make coal available for most applications, it must be converted to gasoline and diesel fuel. Fortunately, that process is cost effective when oil costs over $40 a barrel. Since oil is now over twice that price, the coal-to-liquid fuel industry is starting to take off.

"Coal isn't without its critics. When burned, it gives off greenhouse gasses and other pollutants. However, technologies exist that solve those problems. With oil at current levels, it pays to implement the cleanup
processes and put coal to work.

"Headwaters should profit handsomely from the growing demand for coal. The company developed technology that changes the chemical composition of coal into high value products, including petrochemicals that are usually made from oil.

MOST NOTEWORTHY: Cheesecake Factory (CAKE), Buffalo Wild Wings (BWLD), Alltel (AT), Home Depot (HD) and Nokia (NOK) were today's more noteworthy downgrades:

• Cheesecake Factory (NASDAQ: CAKE) was downgraded to Sector Perform from Outperform at CIBC, to Outperform from Strong Buy at Raymond James and to Peer Perform from Outperform at Bear Stearns after the company reduced its second quarter guidance.

• Buffalo Wild Wings (NASDAQ: BWLD) was cut to Neutral from Buy at Merriman on valuation.

• Lehman downgraded Alltel Corp (NYSE: AT) to Equal Weight from Overweight as the firm doesn't expect a competing bid for the company.

• Home Depot (NYSE: HD) was cut to Market Perform from Outperform following yesterday's rally and feels that with the HD sale out of the way, the focus will now turn to Home Depot's ability to grow in the challenging do-it-yourself retail market. Goldman cut Nokia to Neutral from Buy on valuation...

OTHER DOWNGRADES:

• JP Morgan cut Headwaters (NYSE: HW) to Underweight from Neutral.

• Citigroup downgraded Prudential Financial (NYSE: PRU) to Hold from Buy.

• Matrix USA cut Phototronics (NASDAQ: PLAB) to Sell from Hold.

• Ferris, Baker downgraded Gladstone Commercial Corp (NASDAQ: GOOD) to Neutral from Buy.

• Citigroup removed Office Depot (NYSE: ODP) from its Citi Recommended List.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).

MOST NOTEWORTHY: UnitedHealth Group Inc (UNH), Aetna Inc (AET), Hercules Inc (HPC) and Alcatel-Lucent (ALU), were today's noteworthy initiations:

• Jefferies started UnitedHealth Group inc NYSE: UNH) with a Hold rating and $48 target and said near-term risk is still present due to unfavorable reserve adjustments to the company's commercial risk business and high expectations for improvement in the company's commercial medical care ratio.

• Aetna Inc (NYSE: AET) was also initiated by Jefferies with a Hold rating based on valuation.

• Credit Suisse started Hercules Inc (NYSE: HPC) with an Outperform rating and $24 target.

• Matrix USA initiated Alcatel-Lucent (NYSE: ALU) with a Hold rating on valuation...

OTHER INITIATIONS:

• Cowen is positive on MIPS Technologies, Inc (NASDAQ: MIPS), starting the company with an Outperform rating, and expects a deal with Microchip Technology Inc (MCHP) to be announced soon.

• JP Morgan initiated shares of Headwaters Inc (NYSE: HW) with a Neutral rating.

• Needham assumed coverage of Harris Interactive Inc (NASDAQ: HPOL) with a Hold rating.

• ThinkEquity started Aruba Networks, Inc (NASDQ: ARUN) with an Accumulate rating and $15 target.

• Lazard initiated shares of Cyclacel Pharmaceuticals Inc (NASDAQ: CYCC) with a Buy rating and $11 target.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).