"This is one of our key challenges — answering the question, 'Why Bing?' " Mr. Lu said recently, as he roamed in front of a whiteboard sketching out his vision for the evolution of search.
Politics in both the United States and Israel will have much to do with how these challenges are answered.
He would issue video game challenges and answered questions on cheats and tips.
Often, the calls to meet development challenges are answered by increasing the levels of development assistance.
Martha Kulish, 81, a resident at Nesconset since March, aced the trivia challenge by answering that Jonas Salk invented the polio vaccine.
Small satellites have to meet a big challenge: to answer high-performance requirements by means of small equipment and especially of small budgets.
The challenge with answering that question is that the term "genius" itself has become incredibly contested over the years.
The first challenge with answering this question is just determining which Christmas and which Jesus we are talking about.
Tyson took on the challenge to answer the age-old Eurocentric question of whether women and blacks are genetically inferior.
