In an era when respectful disagreement is not the norm, I welcome letter writers thoughtfully discussing things. We all need ...

Rich Juzwiak: Sometimes I think grief or guilt can be a little bit selfish and tainting. Obviously, our writer affected their ...

5 Robots that Look, Act and Are Designed Like Animals Humans can engineer machines to mimic animal biology with startling accuracy. But these robots have one important trait not found in nature ...