We can't stand by when children are dying, just because they don't have enough to eat. Not only can we save millions of lives now, we can also give the poorest people the power to feed themselves for generations to come.

The UK government has committed to spending 0.7% of its national income on aid. It's also promised additional money to help poor countries cope with climate change, which is making it harder for the poorest people to grow food.

We must make sure they keep both of these promises, and that the money is used to fight hunger and malnutrition. Just giving vitamin A to children could save more than half a million lives every year.

And leaders must find new ways to fund poor countries' response to climate change, helping them grow enough to feed their people.

Too many big companies don't pay up the taxes they owe in developing countries. They're dodging millions of pounds every day. That money could help millions of people to escape from hunger - forever.

We can help stop this tax dodging if our government steps up to close the international tax loopholes. We need to get all the G8 leaders to agree a new international tax treaty.

This would help poor countries keep hold of the taxes they're owed, giving them funds to invest in supporting farmers to grow enough food for everyone in their country.

Photo: flickr.com/billtimmins

Some of the world's poorest farmers are losing their land to giant corporations. These companies don't care that the land is already being used by local people to grow food. The land grabs are being facilitated behind the scenes by investment banks and the World Bank.

Stopping them would help millions of people get enough to eat.

Increasingly, companies are growing food to fuel cars, not to feed people. This madness is driving up food and petrol prices. If we end the use of food for fuel, we can stop millions going hungry.