22/11/2015 Newsround

I'm Martin and here's what's coming up on Newsround.

The toxic mud flowing down a river in Brazil.

Ten in a row for this Premier League record scorer!

And the polar bear enjoying its first winter snow.

Let's start with a warning that half the trees in the world's most famous

A new study claims lots of trees in the Amazon are now on a list

of globally threatened species, including

Scientists say part of the reason is that

so many trees have been cut back and no longer protect other wood life.

Now, it's been Anti-Bullying Week this week with many

of you telling us about your experiences, and taking part

It's an issue that can affect anyone and one of the greatest Paralympic

athletes ever, Dame Sarah Storey, has been telling me

When it comes to medals, you don't come better. She has competed in six

Paralympic the Schmucker pound the games. She is Great Britain's must

successful female Paralympian. But when she was at school, she was

badly bullied. She has been telling me all about it. Going to the games

and the 1992 games in Barcelona, when I came home, school was a

different place to what I remembered it to be, and as a result of being a

good season -- student and concentrating on my studies and not

blowing my own trumpet, I was not popular at school anymore. It was a

situation where you would walk down the core door and people would walk

the other way or eye would be in the toilets and people would come and

talking about me. If you are being bullied, don't be afraid to tell

someone. The person that you tell, they might not have the ability to

do anything practical to help you, but just by getting it off

A wave of toxic mud travelling down a river in Brazil has reached

Barriers were put up to try to protect plants and animals

The orange sludge is a result of a dam burst further upstream,

and people are worried the pollution could affect wildlife.

On the other side of the world people in New Zealand

are voting on whether the country should get a new national flag.

They've got just under a month choose which one of five new

A second vote next year will then ask whether people want to replace

the existing flag, which features the UK's Union Jack.

Footy now, and Liverpool thrashed Man City 4-1 yesterday while Everton

But the big story of the day is that Leicester City

are top of the Premier League thanks to Jamie Vardy, who's equalled

a Premier League record by scoring for the tenth game in a row.

So how does he feel about reaching that mark?

It is a nice little weight off the shoulders, but I got to get back on

the training field and hopefully take it one step further.

Novak Djokovic will be hoping to win a record his fourth ATP title

Federer will be confident going into his 10th final in this event,

and has already beaten Djokovic in the group stage earlier this week.

And the world number one is impressed by how well

Given the fact that he has been playing some really good tennis

throughout the week, I think it was a very good performance. Played very

aggressive and made a lot of winners and executed the game plan

perfectly. Yep, strap yourself in for Strange,

Stranger, Strangest! This is a footballing panda who

likes to stay awake past his bedtime. He has been