Friday marked opening day at The Big E and if you remember last year, the fairgrounds dealt with some heavy congestion due to large crowds, but we’re told that, this year, they’ve made some changes.

Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States Department of Bioengineering, University of Pennsylvania, Philadelphia, ...

In the decade-plus that I’ve been using them, e-readers have become indispensable in my life. Unlike with paperbacks, an e-reader allows me to carry dozens of books in a fanny pack or backpack, and I ...