That doesn't mean your city can't produce much gold on its own rather, you can build Trading posts with Guilds Technology, which will produce +1 Gold each and can later (with Economics Research) do +2. Gold has been removed from a lot of tiles with the DLC and is instead now primarily gained through Trade Routes. Luxury Resources tend to provide Gold when worked. Gold: Raising Civilization Income to Buy Units/Buildings and Fund Research Agreements Late-game it is impossible to get as many Science out of an Academy tile improvement because there is less time in the game, while early on it's the best option for Great Scientists don't produce as much instant Research and the Academy can far surpass that amount over time. Late in the game, use Great Scientists to get instant Research Points toward your current project that may spill over to the next none is wasted. Science Specialists can be placed into Universities, Public Schools, and Research Labs, raising the rate at which your Civilization will make Great Scientists, who can make an Academy on a map tile that your city can work to produce lots of Science. My dream city would have loads of food tiles, Jungle and a lone mountain. This allows you to build the Observatory, which raises Science output another 50%. Another big boost comes from founding a City next to a Mountain. This provides more to your flat rate before the percent boosts. With Rationalsim, you'll get +1 Science per Trading Post, making Jungles worth 3. When you are able to build Universities (Education), you will get +2 Science from Jungle tiles, which can also have Trading Posts without removing the jungle. If you have a University (+33%, Education Tech), National College (+50%, Philosophy Tech), and a Research Lab (+50%, Plastics Tech) your flat Science output would be increased by 133%, over double.Д¬ities founded near Jungle tiles should try to preserve them until later in the game. Once all these flat numbers are added up, the percentage bonuses from other Buildings are applied. These buildings contribute a flat rate of Science, as do others. Additionally, the Library (writing tech) and Public School (Scientific Theory Tech) both give +1 science for every 2 Citizens in a City.

First, because each unit of population you have in a city gives you +1 Science passively. Science comes primarily from having a large population. If you switch Science projects, you will keep any progress until you return, so if some tech becomes immediately necessary, you can jump on it without losing any progress.

Every turn, your Science is paid into that cost and brings you closer to a new Scientific achievement. All the Cities' Science is added up to determine your output, and each Research Project in Civ 5's massive Tech Tree has a cost. Science: Maximizing Output to Research Technologies Each City's Science is added to determine your total Research Points per Turn

They will determine your total Science Research output, your Gold reserve and budget, the Civilization's popularity as a tourism destination, and Culture it generate to purchase Social Policies and later in the game, Ideologies. While Food and Production are city-centered, the following City-generated resources are accumulated for the Empire as a whole, being added to the totals of other Cities and ultimately determining what's available to you as a Leader. Civilization 5: City Guide Part 4 - City Output continued Science, Gold, Faith, Tourism, and Culture

Ring map civ 5