0:00:11 > 0:00:12Morning, guys.
0:00:12 > 0:00:15Ayshah here on the day Team GB return from Rio.
0:00:15 > 0:00:18And isn't that the coolest selfie you've ever seen?
0:00:18 > 0:00:20The athletes are flying home on this specially prepared
0:00:20 > 0:00:22British Airways 747, complete with golden nose cone
0:00:22 > 0:00:24so everyone knows who's landed.
0:00:26 > 0:00:29The aircraft will land at about 10 o'clock this morning,
0:00:29 > 0:00:32with 320 athletes and support staff and all their luggage and equipment,
0:00:32 > 0:00:37including pole vaulting poles and a 6.7 metre sail.
0:00:37 > 0:00:41I wonder how they pick who goes in first class?
0:00:41 > 0:00:44Some of Britain's Olympic heroes are already back home.
0:00:44 > 0:00:48Two of them are Team GB's golden couple Laura Trott and Jason Kenny.
0:00:48 > 0:00:51Laura is the first British woman to win four gold medals and Jason
0:00:51 > 0:00:54became Team GB's joint top gold medal winner ever with six
0:00:54 > 0:01:01gold medals from three different Olympics.
0:01:01 > 0:01:04Well, Newsround will be catching up with Laura and Jason later this
0:01:04 > 0:01:06morning and we want your questions to ask them.
0:01:06 > 0:01:10Go online right now and send them in, and we'll ask as many as we can.
0:01:10 > 0:01:13You'll be able to hear from them at Newsround online later today
0:01:13 > 0:01:18and on telly on CBBC at 4:20pm this afternoon.
0:01:18 > 0:01:22With the sunshine expected to come back across the country this week,
0:01:22 > 0:01:25the Canal and River Trust is asking people not to cool off by jumping
0:01:25 > 0:01:27into canals and rivers.
0:01:27 > 0:01:30They say things can get pretty dangerous really quickly.
0:01:30 > 0:01:33Leah has more.
0:01:33 > 0:01:39The hidden dangers lurking under the surface.
0:01:41 > 0:01:45But it's not just the rubbish down there that's the only problem.
0:01:45 > 0:01:48The water is really cold, so when you jump in you might get
0:01:48 > 0:01:50something like shock, which means you might die...
0:01:50 > 0:01:53Sam works for the Canal and River Trust, which manages
0:01:53 > 0:01:562000 miles of canals, rivers, reservoirs and docks
0:01:56 > 0:02:00across England and Wales.
0:02:00 > 0:02:04They want children to be aware of the unseen dangers in the water.
0:02:04 > 0:02:07I know it looks really warm, and it's really warm today,
0:02:07 > 0:02:09but it is really cold and you might catch your breath,
0:02:09 > 0:02:12and that might cause you to drink in some of that water.
0:02:12 > 0:02:14And the water isn't too clean.
0:02:14 > 0:02:17You might get a tummy bug from drinking some of it or having
0:02:17 > 0:02:20it around your body, and you wouldn't want that,
0:02:20 > 0:02:24especially not in the summer holidays when it's so nice outside.
0:02:24 > 0:02:26Despite knowing the dangers, on a hot day like this
0:02:26 > 0:02:28there still are some people who take the risk
0:02:28 > 0:02:32for a quick swim in the canal.
0:02:32 > 0:02:35There are, really, loads of ways that you can enjoy the canals.
0:02:35 > 0:02:38You can go for a walk along the towpath, you can go swimming
0:02:38 > 0:02:43in your local swimming pool or even in a lido,
0:02:43 > 0:02:45which is outdoors, and you can join an outdoor swimming club
0:02:45 > 0:02:47if you want to go swimming outdoors as well.
0:02:47 > 0:02:50Even though it's really hot, try and stay away
0:02:50 > 0:02:51from the edge of the canal.
0:02:51 > 0:02:52Don't get in the canal.
0:02:52 > 0:02:59Find another way to cool off and have fun in a safe way.
0:02:59 > 0:03:03Hundreds of people get into trouble in canals every year across the UK,
0:03:03 > 0:03:07but the hope is lots of you will now be put off from taking a dip
0:03:07 > 0:03:16and find other ways to enjoy the waterways safely this summer.
0:03:16 > 0:03:19A massive oil rig which has been stranded on a beach on the west
0:03:19 > 0:03:21coast of Scotland for two weeks has been successfully
0:03:21 > 0:03:22re-floated and towed away.
0:03:22 > 0:03:25But how did it end up there in the first place?
0:03:25 > 0:03:26Naz has more.
0:03:26 > 0:03:31It's one of the more unusual things to be found washed up on a beach.
0:03:31 > 0:03:33But this huge oil rig, which is used to drill
0:03:33 > 0:03:36for oil in the seabed, was blown on to this beach
0:03:36 > 0:03:40on the Isle of Lewis two weeks ago.
0:03:40 > 0:03:42It's called the Transocean Winner and was being moved from Norway
0:03:42 > 0:03:45to Malta when stormy weather hit and it became separated
0:03:45 > 0:03:50from the boat that was pulling it along.
0:03:50 > 0:03:53The oil rig weighs a huge 17,000 tonnes, which is equal to the weight
0:03:53 > 0:04:02of 28 Airbus A380s - the biggest planes in the world.
0:04:02 > 0:04:06It was carrying 280 tonnes of diesel oil when it ran aground
0:04:06 > 0:04:09but in the last couple of days, salvage teams have managed to move
0:04:09 > 0:04:13200 tonnes of it on to another ship.
0:04:13 > 0:04:16Some of the oil did escape when the rig was washed ashore,
0:04:16 > 0:04:21but it's thought to have evaporated.
0:04:21 > 0:04:23Environmental groups have been worried that more oil could leak
0:04:23 > 0:04:28and cause pollution to the wildlife there and affect the beach,
0:04:28 > 0:04:33which is popular with tourists and surfers.
0:04:33 > 0:04:36Once the rig is moved clear, it will be checked for damage before
0:04:36 > 0:04:38the company can decide whether it can be repaired
0:04:38 > 0:04:39or will have to be scrapped.
0:04:44 > 0:04:46That's all for now, I'll be back with more Newsround
0:04:46 > 0:04:48in about half an hour.
0:04:48 > 0:04:50Don't forget to go online and send us in your questions
0:04:50 > 0:04:58for Laura Trott and Jason Kenny.
0:04:58 > 0:04:58Get
0:04:58 > 0:04:59Get online
0:04:59 > 0:04:59Get online now,
0:04:59 > 0:04:59Get online now, see
0:04:59 > 0:04:59Get online now, see you
0:04:59 > 0:05:00Get online now, see you soon.
0:05:00 > 0:05:01Get online now, see you soon. Goodbye.