How does temperature work?

cold_Winters_day

This question was asked on a cold Winter’s day. The water in the bird bath had frozen and I used hot water from the kettle to thaw it so the birds could drink. When I explained to my 6-year-old that water freezes at zero degrees Celsius, she wondered if that was the coldest that things can get. But it isn’t – in fact some things can get much, much, much colder!

So what happens when things get hot or cold and how do we measure temperature?

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How does a seed know what to grow into?

Seeds come in different shapes and sizes but how do they know what kind of plant to grow into? The answer to this fantastic question about plants actually tells us about how all life on Earth works.

flower

Inside all living creatures there is information that tells their bodies how to grow, develop and work. But what is this information and how does it create life?

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