Estimates show that more than 4.9 billion people in the world use some form of social media. That’s more than half the planet’s population.

When you think of tech innovation and the online world, Silicon Valley usually comes to mind.

But tech reporter Taylor Lorenz argues in her new book, "Extremely Online," that Los Angeles has really made the internet what it is today. Lorenz joined host Lisa McRee on "LA Times Today."

“Extremely Online” is now available wherever books are sold. You can catch Taylor Lorenz in conversation with LA Times columnist Brian Merchant in Exposition Park on Oct. 30. For more information about the event, go to LAPL.org.

Click the arrow above to watch the full interview.

Watch "LA Times Today" at 7 and 10 p.m. Monday through Friday on Spectrum News 1 and the Spectrum News app.