The science of complexity is probably the greatest challenge of all, greater than that of the very small on the left and the very large on the right.

There's nothing wrong with big, crazy challenges.

The real challenge then, is to try to figure out how we can change rules.

The selection of indicators has proven to be challenging.

But deciphering the script is a very challenging task.

It's a very challenging task. But more to come later.

That was challenging.

Accordingly, the protection obligations of the United Nations were becoming increasingly challenging and complex.

The past year was indeed very challenging for the humanitarian community.

And this is a challenge.

Both of them have challenging responsibilities to assist Member States in very important but difficult tasks.

That challenge could be met only if there was consensus on what the nature of the new Organization should be.

This is challenging work to do.

Specific challenges related to indigenous peoples' development

In fact, it is a challenging concept for both developed and developing countries.

Production of the Treaty Series through the database was a particularly challenging aspect of the project.

He said that there was a greater challenge ahead, the challenge of poverty, of climate change global challenges that needed global solutions and needed the creation of a truly global society.

And that's that's rather more challenging than all the speakers before me and all the ones coming after me.

Determining an optimal level of accountability for results is also challenging.

It's going to be very challenging to deal with.

So what would some of the specific challenges look like?

At the best of times, traveling between Indonesia's many islands is challenging.

6. The Council reaffirms the importance of ensuring the universality, objectivity and non selectivity of the consideration of human rights issues.

I look back on a few years of incredibly hard, but at the same time challenging, work.

The year under review has been a challenging one for the United Nations, but the challenges have created an opportunity to debate change in the Organization.

This process is particularly challenging for the prosecution, which has several hundred thousands of pages of investigative material in addition to thousands of pages of court documents.

(c) Conduct of inspection and compliance missions, with a particular focus on the most challenging locations worldwide (40)

However, cities have the tools to assist in the search for an answer to these challenges.

And so, that allows you the flexibility to go into very challenging terrain and actually make your way where you want to go.

Effective implementation of such commitments is indeed a complex and challenging task, which requires political will and adequate resources.

And this is a very challenging idea. It's a very challenging idea to mainstream media. It's a very challenging idea to anyone who has invested an enormous amount of time and expertise, and who has a lot of energy invested in the notion that he or she knows better than everyone else.

The goal for primary school completion has been even more challenging because of high population growth rates and continuing high rates of school drop outs.

28.16 Population, with its various dimensions, is one of the major challenges confronting the international community.

Pool is geometry... in its most challenging form a science of precise angles and forces.

His eight years of service as Director General of UNIDO had been a challenging time to which he had devoted all of his energy.

The Biodiversity Challenge

Today's United Nations staff must be (a) aligned with the new substantive challenges of the twenty first century (b) empowered to manage complex global operations and (c) held accountable.

Breadth, balance and cohesion in the curriculum will be achieved through classroom learning experiences that are positive, challenging, stimulating and enjoyable.

DM She's very tough it's most challenging.

A new appreciation for the privilege that we have of undertaking this challenge.

We're putting this enormous load on them for three or four days and it's very challenging, Mora said.

We have committed ourselves to challenging goals, in particular to reducing extreme poverty by half by the year 2015.

The past year was particularly challenging for achieving the objectives of disarmament, arms control and non proliferation.

In fact, some of them actually survived the Internet challenge, and some got even more repressive.

Such cooperative efforts were the vehicles that could effectively overcome the natural resource related challenges in the region.