The names complemented William Penn's efforts to promote the city as a "greene rural town." After William Penn and surveyor Thomas Holme sketched up their layout for Philadelphia in 1683, most of the streets running east-west were named after trees. North-south streets were often named after figures from history or literature. These are just some of the many questions that can be answered by visiting the Library of Congress website. The site offers access to millions of pages of material from across the world and is worth a look if you're interested in learning more about different cultures or finding out how current events affect you personally. Some other helpful websites for students interested in learning more about foreign countries or aspects of American culture include zenhabits.com, which provides guidelines for creating healthy habits; TodayIWill... ...which gives useful tips for a successful start to your day; and Notcot.com, which is full of ideas for things to do this weekend with the family. Students who are looking to improve their research skills or want to learn how to write effectively may find Doximity useful. This website allows users to search through detailed information about doctors so they can find the right one for themselves or a friend. Users can also create private networks to share information about particular physicians who have specializations they need help with.