Today’s youth are shockingly unhappy and spending their time in some troubling ways, including deep inside their cellphones. That’s what Jeremy Adams says after 24 years in the classroom and in his new book “Hollowed Out: A Warning About America’s Next Generation.” Then in America Q&A we ask if you think you spend too much…

Today’s youth are shockingly unhappy and spending their time in some troubling ways, including deep inside their cellphones. That’s what Jeremy Adams says after 24 years in the classroom and in his new book, “Hollowed Out: A Warning About America’s Next Generation.” Then, in America Q&A, we ask if you think you spend too much time…