VISA USA has made some recommendations for how to implement the shift from magnetic stripe payment cards to those which use a chip for authentication and seems primarily concerned with explaining that the new chip cards will not need associated personal identification numbers. ****Read More; Visa Emphasizing That New Cards Will Not Need Offline PINs
Underwater Kingdoms Coral reefs are underwater ecosystems made from the skeletons of hard coral colonies. Each colony is composed of multiple polyps called corals—animals with tentacles around a mouth at one end and sac-like bodies at the other that attach to a surface and secrete calcium carbonate for protection. Over thousands of years, these secretions accumulate to form habitats that support about 25% of marine species, even though they cover less than 1% of the ocean floor. > The first coral reefs formed hundreds of millions of years ago. ( More , w/video) > Coral polyps are tiny animals whose mouths both consume food and expel waste. ( More ) > See how coral reefs get their color. ( More ) Known as the "rainforest of the seas," coral reefs are found in tropical and subtropical waters of more than 100 countries, wi...
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