So, I took that as a challenge, basically.

First, courageous politicians and policymakers took on the challenge of designing crucial reforms and explaining their consequences to a public that was understandably wary. They understood the historic nature of the task and embraced the challenge.

They took up the challenge, and Korea was able to double the proportion of students achieving excellence in one decade in the field of reading.

Had the full bench upheld the author's challenge, the case would subsequently have been heard by a court in which the challenged judge or judges took no part.

The challenge

This first challenge is what I refer to as the persuasion challenge.

The democratic challenge today is, above all, a social and human challenge.

The Renminbi Challenge

The Transparency Challenge

The Biodiversity Challenge

The Chávez Challenge

Meeting the challenge

The implementation challenge

The eight original MDGs, which include reducing child mortality and achieving universal primary education, are lauded for their simplicity and measurability. They took an abstract, outsize challenge and distilled it into achievable ends.

We need to reframe the challenge that is facing Africa, from a challenge of despair, which is called poverty reduction, to a challenge of hope.

This is the challenge.

The Global Jobs Challenge

The New Mercantilist Challenge

As a challenge to myself, since I say this once in a while in lectures, I took a copy of the New York Times and tried to find some instances of people synthesizing happiness.

There's one challenge symbolized at the top, but there's another challenge to science symbolized at the bottom.

The challenge facing all those who are interested in Africa is not the challenge of reducing poverty.

So here's the next challenge.

That's the biggest design challenge.

The second challenge was cells.

The Long Term Investment Challenge

The Challenge of Russia s Decline

Technology and the Employment Challenge

So the challenge is clear.

Global Cardboard Challenge.

China s Growth Challenge

Europe s Immigration Challenge

Africa s Urban Challenge

But Brenda, not being phased by stuff like that, took a look at her challenge and came up with a not so obvious solution create a business that produces skin care products from honey.

And ultimately, the challenge of the baker, the challenge of every culinary student, of every chef, is to deliver flavor.

So our first challenge was to find these things, and that was a challenge, indeed.

And I think that what connects the challenge for civil society, the challenge for governments and the challenge for business now is, in a way, a very simple one, but quite a difficult one.

So, certainly the challenge was there.

An Answer to the Russian Challenge

The second challenge relates to security.

That's my biggest challenge.

A challenge, of course.

Governments Self Disruption Challenge

Africa s Structural Transformation Challenge

China s Interest Rate Challenge

Meeting America s Growth Challenge