Now let's add some more functionality. We're showing media headlines from three different sources, but our user is probably interested in more than current affairs. We're going to see how easy it is to display the current weather and some exchange rates at the top of the page. For the weather data, we'll be using the OpenWeatherMap API, and for currency data, we'll be using Open Exchange Rates. At the time of writing, these APIs are freely available, although they both require registration.
In your web browser, visit the URL http://api.openweathermap.org/data/2.5/weather?q=London,uk&units=metric&appid=cb932829eacb6a0e9ee4f38bfbf112ed. You should see something that looks similar to the following screenshot:
This is the JSON weather data for London which is designed to be read automatically instead of by humans. Before looking at how to go about reading this data into our Headlines application, note that the URL we visited...