Do you know the difference between weather and climate? Well, the weather tells us what it’s like outside each day. Like, if it’s raining … or if the sun is shining. And if it’s hot or cold.

At Moms Clean Air Force, the organization that I co-founded to mobilize moms to fight climate pollution ... and extreme weather. The bodies of babies, toddlers, and teenagers are still developing.

Climate is a description of the average weather conditions in a certain place for the past 30 or so years. Different areas of the world have different climates. We call these climate zones.

UNDP Administrator, Achim Steiner, said: "The Weather Kids add a powerful voice to alert us to a future that will certainly materialise if we do not take meaningful climate action today.