On Thursday, Collins answered readers' questions in a live chat.

Bilger and Eagleman answered readers' questions in a live chat.

Lemann also answered readers' questions on his Comment in a live chat.

Today Anderson answered readers' questions in a live chat.

Today, Baker answered questions in a live chat; you can read the transcript below.

He also answered questions from readers in a live chat.

Today Talbot will answer readers' questions in a live chat.

On Wednesday, Frank answered readers' questions in a live chat.

On Tuesday, Anderson answered readers' questions in a live chat.

On Sunday, Packer answered readers' questions in a live chat.