With more than three million followers, Ashton Kutcher is the undisputed king of Twitter. So when Kutcher agreed to take questions from TIME’s readers for a 10 Questions interview, he also agreed to ...

For reasons outside of my control -- let’s just say the video feed for HBT Daily barfed on itself this morning -- we weren’t able to get to all of your Twitter questions. And I had some saved up for ...

Structural engineer Dr. Nehemiah Mabry answers the internet's burning questions about city building. How are underwater tunnels made? What city has the best urban designer? How do bridges not collapse ...

Tiffany and I take your Twitter questions. And for reasons having to do with the dry cleaners mostly, I am rocking a cardigan instead of a suit jacket. Try to contain yourselves. DISCLAIMER: This site ...