According to the Daily Express, 45-year-old former Cardiff University lecturer Cliff Arnall has attached numbers to the factors and created a happiness formula -- O + (N x S) + Cpm/T + He.
When a value for being outdoors (O) is added to nature (N) multiplied by social interaction (S), added to childhood summer memories (Cpm) divided by temperature (T), and added to holiday excitement (He) then the third Friday in June comes out as the optimal day for peak happiness.
http://daytum.com/ is an interesting site I just discovered through Nicholas Felton's site (http://feltron.com). I haven't played around with it much yet but it seems like it's a tool for collecting, organizing, and visualizing personal data over time. Could be useful for anybody wanting to collect data for a future project. Everyone should also check out Nicholas Felton's work, he's an awesome designer who works for Facebook and has had his infographics published all over the place.
Above, Ben Franklin's 13 Virtues Habit Tracker, a tool for daily reflection on how well he was following his 13 Virtues: Silence Order Resolution Frugality Industry Sincerity Justice Moderation Cleanliness Tranquility Chastity Humility
Andreas Fischer is a German artist who "works with generative systems, physical representations of data as well as visualizations of digital processes to create graphic representations, sculptures and installations," according to his bio. One of the things I like about his work is that it incorporates a more sculptural approach to data visualization, utilizing a variety of materials, spaces, and scales.
Akamai is a company that has a large but nearly invisible presence on the web. They have a network of servers distributed across the globe, allowing their clients (e.g. Yahoo, Adobe, Reuters, etc) to server their users faster. Delivering about 20% of the total data on the web per day, they have an awesome set of data and some cool visualiziations off of it: