CFCs, HCFCs, and Halon: The ozone layer is destroyed by CFC's, chlorofluorocarbons, that are used as a propellant in aerosol cans, and refrigerants in older cars and refrigerators. When Chlorofluorocarbons (Freon and other CFCs) and Bromofluorocarbons (Halons) they became popular refrigerants and fire fighting agents.
Anyways, let's come to out topic. Yahoo! Browser. Yahoo is the No.1 site on the web. Having the maximum traffic, it's still ruling in the laexa rank. Now, just to get all it's pages open properly and work nicely, Yahoo! joined hands with Microsoft in making a Yahoo! friendly browser. And here it is, YAHOO! Browser.
Yahoo is replacing Google as the default search engine for Mozilla's Firefox browser, the companies announced late Wednesday. With 10% of the market, it is the Internet's third most popular search engine, behind Google's Chrome and Microsoft's (MSFT, Tech30) Bing (which powers Yahoo searches).