At the beginning of the year they were set a challenge of reading 10 minutes every night and then writing about the characters in the book.
But today, RAND is helping the United States government deal with a new set of challenges — challenges of our own creation.
And every day, I have a new set of challenges ahead of me.
However, returning to civilian life threw up a whole new set of challenges, many of them financial.
Admittedly, this President began his term in office facing a greater set of challenges than any of his immediate predecessors.
His successor will embrace a tumultuous set of challenges at a critical time in the history of Christianity.
We face a new set of challenges... Resolving questions of global governance urgently requires an invigorated national and global debate.
Rapid urbanisation across India poses a new set of challenge for the country's cities.
Prescribing in community settings did, however, present a set of challenges.
Long ncRNAs present a unique set of challenges for the study of their molecular functions.
