One of the hardest tasks for some foreigners is to keep up to date with what is still open, what is under new management and what is the latest place.

Mister Sagan worked for many months on what to say in the message. It was an extremely difficult task.

The cleanup seemed daunting, too much for her to deal with all at once.

Trying to recreate an event that happened billions of years ago is a daunting task, but many scientists believe that, like the emergence of life itself, it is still possible.

Industry bosses agree that saying "no" to opportunity is one of their most important jobs and among their most difficult.