The energy challenge that confronts Europe calls for an ambitious and courageous approach.

And just as these groups embrace the green energy challenge and it's really been amazing to me to watch how much brain power, how much money and how much serious thought has, really over the last three years, just poured into the green energy field.

The Renminbi Challenge

The Transparency Challenge

The Chávez Challenge

The Challenge of Balakot

The Bogotá Challenge.

The Challenge of Russia s Decline

Defying the Garden of Eden Syndrome

The Challenge of Medical Empowerment

Are you looking for action?

That's my biggest challenge.

The Long Term Investment Challenge

The New Mercantilist Challenge

Solutions the challenge of repatriation

And so that's a big challenge.

Desire, rose to challenge him.

I'm going to let you challenge authority.

We won a half a million dollars in the DARPA Urban Challenge.

You're not going to defy gravity.

Isn't that an intriguing challenge?

And just as these groups embrace the green energy challenge and it's really been amazing to me to watch how much brain power, how much money and how much serious thought has, really over the last three years, just poured into the green energy field.

Africa s Structural Transformation Challenge

ब ग ल द श क कट टरप थ च न त

I have a challenge for this last talk.

The language challenge by Claude Piron

That's a challenge. I like this.

So that's a tough challenge, right?

He has challenged the British on behalf of you all.

Listen, I'll teach you a challenging trick.

Latin America s Next Growth Challenge

PM

It's an American challenge. Half of you in the room.

And it is a true challenge, and I do want you to help me.

Market based solutions to the climate challenge run the very serious risk of undermining development objectives, precisely because they aim to raise the price of energy services in order to make renewable energy sources attractive to private investors.

Overcoming Europe s Twin Growth Challenges

Winning the Transatlantic Trade Challenge

But almost immediately there was a challenge to the language, though not recognized at the time.

Let me first deal briefly with the security challenge.

It is an emotional challenge, first of all, because from my point of view

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

Surfers, for example, know this incredibly.

This is the greatest challenge that our country will face during our lifetime.

So moving folks from welfare to work is a real challenge.

So, I want to offer you a challenge today.