:00:18. > :00:21.It's Ricky here live on CBBC with Newsround for you this Monday.
:00:22. > :00:24.World leaders talk about the future of our planet.
:00:25. > :00:29.And all the highlights from Britain's success at the Davis Cup.
:00:30. > :00:32.Scientists say that by the time you are an adult, the world's climate
:00:33. > :00:37.And they also think that time is running out to turn things around.
:00:38. > :00:47.This week there's a big meeting of world leaders in Paris in France
:00:48. > :00:50.Here's Newsround's guide to what's happening.
:00:51. > :01:19.Every year, top politicians from 195 countries around the world
:01:20. > :01:22.And this year, they want to make a new agreement which would see every
:01:23. > :01:48.Every year, top politicians from 195 countries around the world
:01:49. > :01:53.meet to discuss ways to slow down climate change.
:01:54. > :01:56.And this year, they want to make a new agreement which would see every
:01:57. > :02:04.Two degrees, that is the important number at this conference.
:02:05. > :02:07.Scientists say that if the planet's temperature goes up
:02:08. > :02:10.by more than two degrees, sea levels will rise by so much that
:02:11. > :02:14.low lying coastal areas and islands could end up underwater.
:02:15. > :02:16.Extreme weather like heatwaves, droughts and storms could happen
:02:17. > :02:23.A third of all animal species could be wiped out.
:02:24. > :02:28.Some experts believe that we are already halfway to this point
:02:29. > :02:33.That's what they are going to find out.
:02:34. > :02:36.World leaders will try to find a way to slow the rising temperatures
:02:37. > :02:39.by focusing on renewable types of energy, like wind, solar
:02:40. > :02:40.and wave power and reducing energy waste.
:02:41. > :02:43.But some of these new ways of making energy are more expensive
:02:44. > :02:47.Many countries are building clean energy but not quickly enough
:02:48. > :02:51.Rich countries like the UK and the USA have promised to help
:02:52. > :02:54.the poorer ones, but they disagree about the amount of money on offer.
:02:55. > :02:57.So for the next 11 days, leaders will be trying to come up with
:02:58. > :03:03.There's more on the Newsround website about climate changes
:03:04. > :03:06.Today many world leaders have been giving speeches
:03:07. > :03:09.French President Francoise Hollande said that the world was
:03:10. > :03:12.The US President, Barack Obama, said that his country accepted
:03:13. > :03:14.its role in creating the problem and its responsibility
:03:15. > :03:19.This is the moment we finally determined we would save our planet.
:03:20. > :03:22.It is the fact that our nations share a sense of urgency about this
:03:23. > :03:24.challenge and a growing realisation that it is within our power to do
:03:25. > :03:24.something about it. There's more on the Newsround
:03:25. > :03:26.website about climate change and what's being talked about
:03:27. > :03:28.at the conference. Next to our world champion tennis
:03:29. > :03:31.team - Great Britain won the Davis Cup yesterday, beating Belgium
:03:32. > :03:33.by three matches to one. It means they're the best
:03:34. > :03:36.in the world. Here's Jenny with a look back
:03:37. > :03:38.at how they did it. It's been 79 years since a British
:03:39. > :03:41.team has taken the trophy And this time round,
:03:42. > :03:44.with Andy Murray leading them, Britain and Belgium faced each other
:03:45. > :03:48.in five matches over three days, with the first side to win three
:03:49. > :03:51.matches allowed to take home Bet you never thought you would see
:03:52. > :03:55.the day again. The Murrays have won the doubles,
:03:56. > :04:04.inching Great Britain closer. Great Britain have done it
:04:05. > :04:24.in most spectacular style. I felt very proud of everyone in the
:04:25. > :04:29.team, proud to represent my country and that we managed to win the
:04:30. > :04:31.biggest competition in the sport, so it's a good day.
:04:32. > :04:36.We want your videos for our Newsround advent calendar.
:04:37. > :04:38.This year we want to hear about your Christmas traditions.
:04:39. > :04:42.If you don't celebrate Christmas, what do you do instead?
:04:43. > :04:58.Newsround's back tomorrow morning with Jenny at 7:40am.
:04:59. > :05:00.Have a great evening and I will see you soon.