Long-form journalism is a type of writing where a lot of words are used to tell a really big or complicated story. It's like when your mommy or daddy reads you a bedtime story, but instead of it being a short story with a few pages, it's a really long story that might take a few hours to read or even a few days!
Long-form journalism is usually found in places like magazines, newspapers, or online websites. A journalist might spend a lot of time researching and interviewing people to make sure they get all the facts right. Then they use their writing skills to tell a story that is interesting and easy to understand.
This type of writing can be about all sorts of things like a famous person's life story, a big event that happened in history, or even an investigation into something that people don't know much about. It's a way for people to learn about something in more detail and to really understand what's going on.
So, long-form journalism is like a really long and detailed story that teaches you about something interesting!