You might want to step back from your speaker or remove your headphones.

Yes! I can't. I just can't believe it.

Marks found out his 11.4 million pounds on Lotto.

This is just... I don't...

You know what? I've got tears in my eyes.

Yep, that's 11.4 million.

Lotto, will you be the next Christmas millionaire?

The National Lottery. Rules and procedures apply.

Players must be 18 or over.

Welcome to Grand Challenges from Nature.

Grand Challenges is our Roundtable series

in which a panel of experts take on the biggest challenges facing society and ask what scientists, governments, charities, even you and I should be doing to try and solve them.

I'm Kerry Smith and in this episode, Food Security.

This is the sound of around 2,000 protesters in the northern Egyptian city of Mahala,

recorded by Al Jazeera News.

The video shows them throwing bricks and firecrackers at riot police.

It's April 2008.

The price of food has been rising for months, and wages are stagnant.

People can't afford to feed themselves.

We have to express our frustration. The prices of all foodstuffs have been escalating. Rice,

cereals, meat, everything. People can't even afford feeding themselves anymore. In late 2007,

drought in grain-producing countries coincided with a rise in the cost of fertilizers

...