Imagine If You Can Remember Everything!

Meet Brad Williams(51) of Wisconsin.

His extensive memory allows him to recall almost any news event and anything he has experienced, including specific dates and even the weather.

"I was sort of a human Google for my family. I've always been able to recall things," he said.

Williams' type of detailed, exhaustive memory is called hyperthymesia and few known cases exist.

Initially, the radio broadcaster didn't think his ability to recall so much was anything special. Gradually over the years other people noticed how much he was able to remember in detail about the same events.

Then in 2006, he read an article about a woman called AJ, which prompted Williams to come forward. AJ is the only scientifically documented case of superior memory.

Now the same University of California doctors who studied AJ are looking at Williams' brain scans in the hopes of determining how it ticks.

All of us have the ability to store all this information. The difference is he can retrieve it.