15/09/2011 Newsround

Hello there. Hayley and Sonali here. Here's some of what we've got lined

up - the super rocket that could take people to Mars. Find out why

laughter really could be the best medicine. First, rescuers are

trying to save a group of miners trapped underground in South Wales.

The men have been stuck all day after a drift mine collapsed in

Swansea Valley this morning. Three men managed to escape, but police

and Fire Services are trying to free four others. It's a difficult

situation. It is dynamic. Everybody that needs to be there from the

emergency services, including the mine rescue teams are there. We'll

keep you updated on that. Prime Minister, David Cameron, is

visiting Libya today. It's the first time such a senior leader

from Europe or America has visited the country since Colonel Gaddafi

was overthrown last month. Britain has been playing a major role in

the military effort to support the rebel groups now trying to run the

country, but there are still lots of questions that need answering.

Three weeks ago, Libyan rebels trying to overthrow Colonel Gaddafi,

entered Tripoli and took over his compound and the city. It was a

massive moment for the country. The battle for Libya isn't over.

Gaddafi supporters still control four areas of the country and the

rebels say they need more weapons to help capture the spots. No-one

knows where Gaddafi is. Most people think he's hiding somewhere in

Libya. He's said he would rather die than leave the country. He

built a network of underground tunnels in Tripoli, which he could

have used to escape. There are loads of deserts so he could be

anywhere. Some of his family have fled to Algeria and this week one

of his sons went to Niger, also next door. Wherever he is, Gaddafi

is still making his views heard. He keeps putting out messages on TV.

David Cameron's visit today is a show of support for the new leaders,

the National Transitional Council. Britain has been one of the

countries heading the international operations to help build a new

Libya. Colonel Gaddafi said he would hunt you down like rats, but

you showed the courage of lions and we salute your courage. The rebels

are led by this man, Mustafa Abdul Jalil. They have big plans. They

want to create a new government by the end of the month and hold

elections within eight months, but they don't have full control of

Libya yet. They reckon Gaddafi is planning further attacks, so there

is still a lot of work to be done. The design for a new rocket that

could replace the shais shuttle and take -- space shuttle and take

astronauts to Earth. They are hoping it will be ready for liftoff

in six weeks' time. NASA aren't the only ones on the design trail - the

shortlist for the new pylons are out. They haven't had a make-over

for 90 years, so a competition was launched to come up with better

designs. To staying safe on your way to and from school. Police in

London say autumn is the worst time of year for children being robbed

and having their mobile phones taken from them. Officers are

running special patrols outside schools so you know how to avoid

being a target. It's almost 8am in Sutton in south-west London and

these officers are part of a crack team looking after the kids on

their way to school. More than 1,000 officers around London have

been put on special duty for the start of the new term. For the next

few weeks, they'll travel on buses, patrolling the streets and offering

advice on how to stay safe. Have either of you had unsafe moments on

the way to school or back home? have. I've been on the bus once and

there was a fight happening upstairs and I got really scared

that maybe one of them would have come down and they would have been

fighting downstairs and I would have been hurt. I've had a friend

who has had something nicked. He had a phone and a teener asked him

for it. He gave them the phone and then they ran off. Officers want to

make sure that kids do as much as they can to avoid being robbed.

Make sure you don't listen to your phone or MP3 player. Don't show

your phone out and about and keep it on silent in your bag and if you

feel unsafe on a bus, then move to another seat. If you are upstairs

move down, or when the bus pulls to a stop, go and speak to the driver

and if you feel unsafe then dial 999. If you are unlucky to have

someone clock what you've got and say, "I want your phone", then what

should you do? If someone has seen that you have a mobile phone, then

hand it across. Don't try to challenge them. The police say they

are working to cut crime, but they need your help to keep you safe.

There's nothing funny about feeling ill, but scientists reckon if you

have a laugh when you're sick it can take the pain away. We have

been back to school in lesson in laughter yoga to fine out more.

Watching your favourite CBBC characters can be pretty funny and

now experts reckon having a laugh could actually be good for you.

Researchers at Oxford University have been testing how much pain

people can take. One of the ways that scientists tested it was to

sit people down in front of TVs with ice packs on their arms. It

doesn't take long for it to start to sting, but what they found was

that people watching the funny clips felt the pain less. These

guys know just how good a giggle can make them feel. It keeps me

going for a while and it's good for your body. It's really fun I think

it's good for other children to get along well with children and laugh.

On average kids laugh more than 100 times a day, compared to just nine

times for adults. If your mum and dad complain of a bad tummy or sore

throat, why not do something silly? It might make them feel better. A

latest list of Guinness World Records is out and it includes the

world's longest finger nails and the most piercing on a face. The

biggest tongue, that is long! Here's the biggest afro and we have

a man with a huge collection of Daliks. He has -- Daliks. This is a