Here's what you need to know about making sure your passport is valid for travel ...

Dark matter keeps getting blamed for the universe’s big patterns while staying stubbornly out of reach. You cannot see it, touch it, or capture it.

Aimee Donnellan has been a correspondent for Reuters since 2017. Her patch includes the pharmaceutical industry. Off the Scales is her first book. In brisk and breezy terms, it recounts the history ...