Worried about your impact on the environment? The way we use the planet's resources makes up our ecological footprint. Measuring yours takes less than 5 minutes and could set you on a life-changing journey. Click here (or here if you prefer in portuguese)
Have you ever felt as the king of the world? Why don't try it? On The White House Museum website you can make a virtual tour among the rooms, halls, promenade and so on of the Obama's place. When you go to any room, it is possible to read the history of the place and see some pictures. Tips from Blue Bus.