It's been four months since I got back from Za'atari refugee camp in Jordan. It's there where I first had my heart broken by the desperate plight of Syria's children. Forced from their homes by violence, children have fled over Syria's borders in their hundreds of thousands to seek safety. Not a day has gone by when I haven't thought of them. It's quite straightforwardly wrong that anyone, let alone a child, should lose so much.

Our 14-year-old Children's Champion Eshitha tell us why she cares about climate change and why we must take action.

Earlier this month, Tom spent several days living £1 per day in support of Live Below The Line, which raises money for charities including UNICEF UK. Here are some of Tom's thoughts about the challenge.

I took on the challenge of living on £1 a day out of compassion and a desire to understand the constraints and conditions of those less fortunate, who don't have a choice. For me it was about voluntarily experiencing even the smallest fraction of the hunger, as well as the discipline required, to subsist on such a small amount. The world's poorest families, all over the world, face such malnutrition that their growth and development is held back. Here's the thing...

Live Below the Line challenges you to live below the poverty line for one week, and  buy all the food and drink you need to survive for five days with just £5 (£1 per day). Sign up today. Today's recipe is 33p homemade pizza. Everyone loves pizza and this is a nice evening meal for your Live Below the Line challenge. If you can afford to buy some extra vegetables to go on the top then it tastes even nicer.

Living Below the Line isn’t easy. My name is Clare Nester and I'm the Community Fundraising Manager at UNICEF UK. I'll be Living Below the Line next week with many of you. Whilst I’m scratching my head trying to come up with ideas of getting through the week on just £5 for our food and drink, those in extreme poverty are making even more difficult decisions. They have to choose between medical care and food, education or clean water for their children. So rather than worrying about what to cook, I’m going to feel proud that my donations will help the 1 billion children whose reality it is to survive on less than a £1 day.

Actor and UNICEF UK High Profile Supporter, Michael Sheen,  writes about climate change and its implication for the world's children.