Written by Lauren Dowe
Climate Change is really important! If we don’t change it soon, it will affect us all in the future! And affect animals, like this polar bear for example. Polar Bears live on ice, so if it gets really hot, the ice will melt  and the Polar Bears, Penguins and other animals that live on the ice, may or will die! And if the ice melts, there will be more water, which means that the land will get flooded!
The biggest ever study on climate change is to confirm the world is definitely getting hotter and it's mainly our fault.
Experts are expected to warn the world could be 3 degrees warmer by the end of the century, damaging the planet.
This would have a devastating effect on weather and wildlife around the world, as ice caps melt and sea levels rise.
Experts say greenhouse gases we produce - like carbon dioxide - are mainly to blame for the temperature rises.
Global Warming
Global warming is the rise in temperature of the Earth's atmosphere.
Rays naturally warm the earth from the sun, which pass through the atmosphere and are reflected back out to space again.
The atmospheres made up of layers of gases - some of which are called greenhouse gases.
They're mostly natural and make up a kind of thermal blanket over the Earth.
Carbon Footprint
There are lots of things you can do to make sure you aren't causing as much harm to our planet. Start by looking at:
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How you travel - chugging around all day in big cars lets off lots off carbon dioxide - cycling, walking or taking the bus is less harmful.
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What you eat - food that's been grown or made locally doesn't have as far to travel as stuff from foreign countries
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What you do at home - why not put on a jumper when you're cold instead of turning up the heat, make sure you switch off stand-by buttons, or persuade your parents to get some energy-saving light bulbs!
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