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The Web raises many usability issues [ 9 ] . " Nearly five hundred thousand NRDC online activists have sent over five million messages on key environmental issues over the last three years , " said Mr. DiCaprio , whose own foundation raises awareness about global warming , endangered species and alternative energy sources . Daisy Stieger said that some long-term staff members really have had no chance of getting the average percentage raise in the last two years . The issue raises the central conundrum of American civil religion : How can you tell if God is on your side ? The commonwealth raised its per-package tax rate from 2.5 cents to 25 cents , and 14 cities and counties raised their local rates as well . Information was gathered on the average percentage raise given each year since 2000 .