1.Ben, 8, asks: how old are the Easter Island statues?

2.Aariya, 8, asks: why do fizzy drinks make you burp?

3.Finn, 9, asks: why can you see your breath in the cold?

4.Sofia, 8, asks: which bird lays an egg the same size as itself?

5.Isla, 10, asks: what is the most venomous animal that affects humans?