Amazon Web Services logoAmazon is putting public data sets on the cloud. Many researchers spend a good portion of their grant money on IT, reducing the amount of money they spend on their core research. But after a few researchers from Harvard began using Amazon for servers and storage, Amazon got smart. They are now making large data sets available for free -- some of which are so large they would take hours to download. Amazon is hoping that researchers won't download the data, but rather access the data while paying for services. The US Census data is already online. Other data, such as historical economic data, is soon to come.