We're looking at the environment: saving the Murray Darling River System; where our glass recycling really goes; getting rid of petrol and diesel cars in the UK; and saving animals from poachers in Cambodia.

You asked and now we have the answers in this special. We investigate rainbows, why we dream, the history of video games and how electricity was invented.

Our focus is on animals, including why whales sometimes beach themselves. We check out a platypus census and see how facial recognition technology is helping the weedy seadragon. Then to Mongolia for some eagle hunting.

We're looking at technology and the problems of cyber attacks. There's a robot who can take your place at school, the fine print you are asked to sign up to on social media, and lessons in a virtual classroom.

We present the answers to your questions in this special. We investigate palm oil, how new words make the dictionary, why we sleep, and we try to figure out whether space is infinite.

We check out some health issues including what it's like to have epilepsy, whether sunglasses should be compulsory at school, are vitamin supplements necessary, and a kid who made hospital parking affordable.

A campaign to get parents to behave well when they watch kids' sport. The first AFL women's league launched, plus we find out where Aussie rules started. Then, boys getting into synchronised swimming.

A look at the lives of kids from the country. How they get their education, live with natural disasters and how they contribute to life on a farm. There's also an amazing mural on country wheat silos featuring local students.

BTN looks to the outer reaches of the universe in this Stargazing Special. We start by telling you all about the first spacecraft to travel to Pluto and beyond before being amazed by the awesome pictures taken by the Hubble Telescope. Then it's back to earth when we discover that a sacred Aboriginal site could be the oldest astronomical map in the world before amateur Astronomer Joe shows us his incredible home-built telescope.

We're travelling beyond Australia's shores in this BtN Special on 'World Affairs'. We begin by looking at what world leaders are doing to tackle the challenge of climate change. This leads on to the issue of air pollution - why is it such a big problem in the developing world? We also enter the secret world of North Korea and consider the importance of protecting the Antarctic.

In this BtN Special on 'Refugees' we ask what is the difference between refugees and migrants. We also look at some of the people now settled in Australia and how a country town has been revitalised since new arrivals moved there. We also meet a couple of girls now living in Nauru even though they want to live in Australia and a refugee girl who loves playing footy.

This BtN Special takes a look at some of the kids doing pretty amazing things in the science and technology area. We meet some award winning young inventors with big ideas, as well as an 11 year old boy heading overseas after developing some amazing apps. Then there's the primary school kids competing with high school kids after building hi tech underwater robots!

It's all about Australia's past in this BtN Special. We take on the biggest project ever undertaken in Australian history with the Snowy Mountain Scheme. We remember two significant wars and learn about the crucial battle of Long Tan in the Vietnam War. And after 100 years, we learn wy Sir Douglas Mawson is still considered the greatest Australian Antarctic Explorer.

Animal Ethics is a BtN Special looking at some of the moral issues around keeping animals. Should tourists be riding elephants and patting tigers if the animals aren't being treated well? Then we ask if when we buy pets such as cats and dogs should they only come from certain breeders and not pet shops? And finally, we look at the shark net debate. Some argue that we shouldn't use nets because they harm and kill marine life.

In this 'Indigenous Connections' BtN Special we begin with the remarkable story of the indigenous kids who learn of their unique connection with the people of Nagasaki in Japan. We meet some outback kids trying to make it into an indigenous choir and we ask if an ancient Aboriginal site could be the oldest astronomical map in the world.

There are plenty of kids doing some pretty amazing things, including Madeleine who makes special care kits for kids with cancer, Sophie who volunteers in her spare time and Ardie, a young racer, who's winning speed races at 13!

We look at the effects of space on the human body and all about gravitational waves. We find out just why this is one of the biggest discoveries of the century. And we give you a step-by-step guide to becoming an astronaut.

We look at some of the negative effects of climate change and some of the environmental efforts people are making to help the natural world. Coral bleaching is at its highest level and coastal mangroves are also in danger.

Animals are intelligent and and play an important part in protecting each other, such as the specially trained dogs doing important work to make sure penguins aren't attacked by feral animals.

We look at the history behind Australia Day and why it's marked on January 26. We learn that not everyone is happy about it. We also find out about the HMS Endeavour, the ship that brought Captain Cook to Australia.

In this special we're looking at some of the health issues affecting kids today. Why are more young people suffering from food allergies and why are there more kids affected by shortsightedness than ever before?

From the Ancient Greeks who created democracy, we travel through time to learn about the history of voting and levels of government in Australia. We get to the bottom of this and more to explain how Democracy works in Australia.

River Kids is a documentary that looks at life along Australia's largest river system, the River Murray. It's narrated by Tyrone, a young Ngarrindjeri boy, who introduces us to people who depend on it. The documentary highlights the importance of Australians working together to look after the Murray.

There were many anniversaries in 2015 and in this BtN Special we take a special look at some of the important milestones.

This BtN Special is about kids who've come to Australia from somewhere else and some of the issues they face when they get here. We ask what is a refugee and meet some Australians who came here as asylum seekers.

Lola is a very fussy eater, she won't eat mushrooms, or peas or fishfingers and she will never ever eat a tomato! Charlie helps her to discover that peas are really green drops from Green Land and mashed potato is cloud fluff from the pointiest peak of Mount Fuji. But will she eat that tiny weeny tomato? Never! But she might just eat a moonsquirter.

The little boy makes a mistake in his drawing and colours in his shorts the wrong colour, so decides not to draw himself at all. However, his friends want to find him.

The little boy loves feeling the breeze as he swings on the swing. When it's someone else's turn, Pablo enters the Art World and draws a bigger swing, before drawing an aeroplane.

Genesis formed in 1967, when Peter Gabriel met Tony Banks at the exclusive Charterhouse School. When audiences went to a Genesis show, it was a huge spectacle and an exciting experience that wasn't just about the music.

Daria, a 16-year-old girl who is a little too smart and funny to fit in with the crowd. It's summertime and the livin' is hard. Daria finds herself forced into volunteering at the OK to Cry Corral, a summer camp for the overly sensitive and those who'd like to be. Quinn submits to tutoring in hopes of getting into the party school of her choice, while Jane is holed up at an artist's colony trying to get in touch with her muse. Then there's the heat rash, the mosquitoes, the runny ice cream - is it fall yet?

It's time for the seventh grade elections and CJ and the boys decide to make their voices heard. But when the kids' friendly competition turns negative, can their friendship survive?

Determined to leave a mark on their middle school years CJ, Fen and Crispo try to find their own unique ways of creating lasting mementos of their time at Pootatuck.

Pablo's old crayons are running out, but his new ones are the wrong shade, design and smell. The Book Animals are worried. Without them, Pablo will not be able to draw any more.

The little boy's tummy makes funny noises. Noa thinks he might have swallowed something odd. They realise it is his tummy, but nobody knows what it is trying to say.

Crispo has to serve as the eyes, ears, and legs for sick-at-home Fenwick, while CJ makes the most of her sick day by sneaking out of the house for a lab session with her school crush.

Marty has Fragile X and wants workplaces to see that he is an employable man. Cain's insight about his autism and its impact on his life is stirring and Jessica offers up her IT skills to companies targeting neurodiversity.

Lola and Lotta both love their tricycles but when Lotta is given her big cousin's bike, Lola wants a big bike too. She gets Charlie's old one and is delighted.

Andrew Denton sits opposite a range of fascinating people and try to find out what makes them tick. Guests include Cate and Bronte Campbell, plus Robert Plant.

When Charlie and Lola visit Granny and Grandpa they always build an extremely special sandcastle on the beach and they always do it together. This time a little girl, followed by her whole family, is determined to join in and Lola's not too happy about it.

Thomas Morton visits Alaska to meet America's last frontiersman, Heimo Korth and his wife, Edna. An accomplished hunter and trapper, Heimo braves endless winter where being mauled by a bear on your way to the outhouse is a legitimate concern.

Veteran performer, Noni Hazlehurst, goes in search of the secrets her parents held so tightly. This journey will be a revelation to Noni. She'll come to understand the impact of war on her immediate family, and why she knows so little about her world-renowned performing ancestors.

Having begged Granny and Grandpa for a scooter, Lola suddenly decides that she now wants a pair of real, actual ice-skates. Everyone is dubious. Charlie reminds her she felt the same about her old yo-yo and Dad warns her that he doesn't want to find the ice-skates in the bottom of her cupboard. But Lola is adamant she needs actual ice-skates because they are sparkly and white, and when she gets them, she will be the best ice-skaterer in the whole school. But it's not quite that simple.

The youngster is horrified to learn he has outgrown his coat, and he tries to draw himself small again so that it will still fit.

Brisbane woman Emma Betts was living her dream as an aid worker in East Timor when someone suggested she have a mole on her back checked. A year after she had it removed, melanoma showed up in most of her major organs. At 22 years of age, she was given only months to live. Reeling from the diagnosis, Emma was shocked to learn that melanoma is now the most common cancer killer in 20- to 39-year-olds. Emma fell in love, got married and then devoted herself to a blog called Dear Melanoma (http://www.dearmelanoma.com). Her honest account of living with terminal cancer and her candid acceptance of her impending death endeared her to tens of thousands. Using her newfound fame she began campaigning for better awareness of the disease among her generation and in the process has helped save others' lives. Introduced by radio host Sarah Wills.

As Ben's lucrative revenue stream through footy umpiring and a side business at school dries up, he wonders how he'll be able to afford to maintain his expensive wardrobe.

The delicate order of the school's lunch table system is thrown into chaos when CJ and the boys decide to sit different tables for one day.

Charlie and Mary have to come up with an invention for a school project by tomorrow.

Annie Lennox and Dave Stewart came from very different backgrounds. After releasing their first album, they began to work with synthesisers, a choice which led them to their breakthrough hit.

Marv's Mum says Sizzles really is a very naughty dog but Lola knows this isn't true. Sizzle just needs some practice! Charlie and Lola take Sizzles back to their flat and set about 'training' him. Things aren't going well and then they discover that Sizzles will do anything for a sausage. Which is fine until Morten, Marv's little brother, eats Sizzles Sausage by accident!

The sharpest tools in the comedy shed will once again take to the stage for the ultimate competition of minds and mirth. Two teams battle it out using laughs and logic to prove their team supreme. Moderated by Magda Szubanski.