23/08/2016 Newsround

Morning, guys.

Ayshah here on the day Team GB return from Rio.

And isn't that the coolest selfie you've ever seen?

The athletes are flying home on this specially prepared

British Airways 747, complete with golden nose cone

so everyone knows who's landed.

The aircraft will land at about 10 o'clock this morning,

with 320 athletes and support staff and all their luggage and equipment,

including pole vaulting poles and a 6.7 metre sail.

I wonder how they pick who goes in first class?

Some of Britain's Olympic heroes are already back home.

Two of them are Team GB's golden couple Laura Trott and Jason Kenny.

Laura is the first British woman to win four gold medals and Jason

became Team GB's joint top gold medal winner ever with six

gold medals from three different Olympics.

Well, Newsround will be catching up with Laura and Jason later this

morning and we want your questions to ask them.

Go online right now and send them in, and we'll ask as many as we can.

You'll be able to hear from them at Newsround online later today

and on telly on CBBC at 4:20pm this afternoon.

With the sunshine expected to come back across the country this week,

the Canal and River Trust is asking people not to cool off by jumping

into canals and rivers.

They say things can get pretty dangerous really quickly.

Leah has more.

The hidden dangers lurking under the surface.

But it's not just the rubbish down there that's the only problem.

The water is really cold, so when you jump in you might get

something like shock, which means you might die...

Sam works for the Canal and River Trust, which manages

2000 miles of canals, rivers, reservoirs and docks

across England and Wales.

They want children to be aware of the unseen dangers in the water.

I know it looks really warm, and it's really warm today,

but it is really cold and you might catch your breath,

and that might cause you to drink in some of that water.

And the water isn't too clean.

You might get a tummy bug from drinking some of it or having

it around your body, and you wouldn't want that,

especially not in the summer holidays when it's so nice outside.

Despite knowing the dangers, on a hot day like this

there still are some people who take the risk

for a quick swim in the canal.

There are, really, loads of ways that you can enjoy the canals.

You can go for a walk along the towpath, you can go swimming

in your local swimming pool or even in a lido,

which is outdoors, and you can join an outdoor swimming club

if you want to go swimming outdoors as well.

Even though it's really hot, try and stay away

from the edge of the canal.

Don't get in the canal.

Find another way to cool off and have fun in a safe way.

Hundreds of people get into trouble in canals every year across the UK,

but the hope is lots of you will now be put off from taking a dip

and find other ways to enjoy the waterways safely this summer.

A massive oil rig which has been stranded on a beach on the west

coast of Scotland for two weeks has been successfully

re-floated and towed away.

But how did it end up there in the first place?

Naz has more.

It's one of the more unusual things to be found washed up on a beach.

But this huge oil rig, which is used to drill

for oil in the seabed, was blown on to this beach

on the Isle of Lewis two weeks ago.

It's called the Transocean Winner and was being moved from Norway

to Malta when stormy weather hit and it became separated

from the boat that was pulling it along.

The oil rig weighs a huge 17,000 tonnes, which is equal to the weight

of 28 Airbus A380s - the biggest planes in the world.

It was carrying 280 tonnes of diesel oil when it ran aground

but in the last couple of days, salvage teams have managed to move

200 tonnes of it on to another ship.

Some of the oil did escape when the rig was washed ashore,

but it's thought to have evaporated.

Environmental groups have been worried that more oil could leak

and cause pollution to the wildlife there and affect the beach,

which is popular with tourists and surfers.

Once the rig is moved clear, it will be checked for damage before

the company can decide whether it can be repaired

or will have to be scrapped.

That's all for now, I'll be back with more Newsround

in about half an hour.

Don't forget to go online and send us in your questions

for Laura Trott and Jason Kenny.

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