(Reuters) - Investors are bracing for Facebook's Wall Street debut on Friday after the world's No.1 online social network raised about $16 billion in one of the biggest initial public offerings in U.S. history. Valued at $104 billion, Facebook is larger than Starbucks Corp and Hewlett-Packard combined, sparking intense speculation on how much higher its valuation will rise once shares start trading. "A 15 to 20 percent pop is in the realm of possibility," said Tim Loughran, a finance professor at the University of Notre Dame. ...

REUTERS - Babies who are breastfed gain less weight over their first year of life compared to babies fed either breast milk or formula from a bottle, according to a U.S. study. The report, in the Archives of Pediatrics & Adolescent Medicine, is one piece of a growing body of evidence that breastfeeding appears to be the best choice for a newborn and protect against obesity later in life. ...

SAN FRANCISCO/NEW YORK (Reuters) - Facebook Inc is set to raise up to $18.4 billion in its IPO and become the first U.S. company to be worth more than $100 billion at its debut, as investors bet on a big pop in the stock when it begins trading on the Nasdaq on Friday. Frenzied demand, especially from individual investors hoping to buy into an Internet juggernaut that touches hundreds of millions of people every day, is expected to drive Facebook well above its initial public offering price of $38 a share, which was already at the top end of its target of $34 to $38. ...

REUTERS - Facebook Inc starts trading on Friday after having raised more than $16 billion in the world's largest technology IPO. Its splashy debut is the culmination of eight years of breakneck growth, as it emerged from Mark Zuckerberg's Harvard dorm room to become the No. 1 social network, linking nearly 1 in 7 people on the planet. Here are key facts about what could be the second-largest IPO in U.S. history, exceeded only by Visa Inc's. ...

(Reuters) - Apple Inc plans to power its main U.S. data center entirely with renewable energy by the end of this year, taking steps to address longstanding environmental concerns about the rapid expansion of high-consuming computer server farms. The maker of the iPhone and iPad said on Thursday it was buying equipment from SunPower Corp and startup Bloom Energy to build two solar array installations in and around Maiden, North Carolina, near its core data center. Once up, the solar farm will supply 84 million kWh of energy annually. ...

SAN FRANCISCO (Reuters) - Twitter will honor requests from users who do not want their online behavior tracked, the company said on Thursday, in contrast with Web companies such Google Inc and Facebook Inc whose business models rely heavily on collecting user data. Twitter said it will officially support "Do Not Track," a standardized privacy initiative that has been heavily promoted by the U.S. Federal Trade Commission, online privacy advocates and Mozilla, the non-profit developer of the Firefox Web browser. ...

(Reuters) - The United States hit Chinese solar companies with punitive import tariffs of 30 percent or more on Thursday, ruling they had dumped cut-price solar panels into the U.S. market. In the latest salvo in a series of ongoing trade disputes between Beijing and Washington, the U.S. Commerce Department said it sided with U.S.-based solar companies that had complained a wave of Chinese imports had wrongly undercut their pricing and forced several renewable players out of business. ...

REUTERS - Facebook Inc starts trading on Friday after having raised more than $16 billion in the world's largest technology IPO. Its splashy debut is the culmination of eight years of breakneck growth, as it emerged from Mark Zuckerberg's Harvard dorm room to become the No. 1 social network, linking nearly 1 in 7 people on the planet. Here are key facts about what could be the second-largest IPO in U.S. history, exceeded only by Visa Inc's . ...

NEW YORK (Reuters) - A lot of loyal Facebook fans and occasional investors are discovering a hard truth this week: Money and connections talk, especially when it comes to a deal handled by Wall Street. The scramble for shares in what is one of largest initial public offerings in U.S. history quickly divided the haves from the have-nots on Thursday. Those with big brokerage accounts and a long history as customers of Wall Street firms likely got at least part of their orders for Facebook shares filled, but would-be buyers who had no such ties were lucky to get any. ...

REUTERS - Apple Inc plans to power its main U.S. data center entirely with renewable energy by the end of this year, taking steps to address longstanding environmental concerns about the rapid expansion of high-consuming computer server farms. The maker of the iPhone and iPad said on Thursday it was buying equipment from SunPower Corp and startup Bloom Energy to build two solar array installations in and around Maiden, North Carolina, near its core data center. Once up, the solar farm will supply 84 million kWh of energy annually. ...

SAN FRANCISCO (Reuters) - Facebook Inc priced its initial public offering at $38 per share, valuing the world's largest social network at more than $100 billion. At that price, the offering would raise as much as $18.4 billion for the company and existing shareholders. (Reporting By Alistair Barr; Editing by Phil Berlowitz)