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 environmental issues making the news. We check out clean coal and whether it's an effective alternative. Banning balloons from outdoor celebrations, plus a nine-year-old taking on the US government.

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.

Pip Courtney hosts Australia's pre-eminent regional and rural television program, covering farming, weather, food, innovation, mining, fisheries, agribusiness, commodity prices and other issues affecting regional communities.

Gorgeously animated, this wordless story about a stranded castaway pays tribute to what's most important in life: companionship, love, family, and the stewardship of nature.

The Tasmanian tiger has been extinct since 1936, three intrepid scientists are setting out on a once-in-a-lifetime expedition to explore the possibility that this intriguing animal may still exist.

Life in the Limpopo River Basin is a fight for survival. It's the brutal dry season, with wildlife awaiting the flood waters. But the rains are late and disaster grips the Valley.

Pip Courtney hosts Australia's pre-eminent regional and rural television program, covering farming, weather, food, innovation, mining, fisheries, agribusiness, commodity prices and other issues affecting regional communities.

The Tasmanian tiger has been extinct since 1936, three intrepid scientists are setting out on a once-in-a-lifetime expedition to explore the possibility that this intriguing animal may still exist.

Pip Courtney hosts Australia's pre-eminent regional and rural television program, covering farming, weather, food, innovation, mining, fisheries, agribusiness, commodity prices and other issues affecting regional communities.

Discover how this seldom-seen animal provides creatures with the hotel and restaurant services they need to thrive in earth's biggest natural wetland- the Pantanal of Brazil.

Getting goods across Australia to the remote city of Perth is no easy task.

Join Andy and some of the world's cutest baby animals as they learn how to climb, swim, play and make friends in the wild!

In Queensland, Australia, a 100-year-old railway network transports freshly harvested sugar cane from farmers across the district to sugar mills.

In Queensland, Australia, a 100-year-old railway network transports freshly harvested sugar cane from farmers across the district to sugar mills.

Every six hours a milk train pulls into the biggest dairy factory on New Zealand to ship 14 million litres of milk around the country.

Saffron Woes Australia's saffron industry is in turmoil after the locally grown product was dropped from major supermarket shelves. Federal Agriculture Minister David Littleproud speaks to Pip Courtney about some of the challenges facing Australian agriculture. Against the Odds Mining towns have a reputation for dying when the minerals dry up. But a small community on the Gove Peninsula is bucking that trend. Collaborative Farming Two generational farmers have embarked on a collaboration which redefines family farming. They've joined forces - sharing land, machinery, infra-structure and staff.

Kinchega National Park is co-managed with the traditional owners of the land.

Sir David Attenborough narrates the dramatic story of two mountain lion mothers struggling to raise their cubs in Wyoming's Rocky Mountains giving scientists new insight into these great predators.

In the deserts of Namibia's Skeleton Coast, maverick biologist Flip Stander has dedicated his life to tracking and studying the local lions, to understand their secrets and help them to survive.

Discover how this seldom-seen animal provides creatures with the hotel and restaurant services they need to thrive in earth's biggest natural wetland- the Pantanal of Brazil.

Andy Day knows young animals all have favourite meals. For meerkats, a scorpion is a tasty treat. In Finland, racoon dog pups stock up before winter arrives, and young capuchin monkeys enjoy shellfish.

The Last Charge On a hillside near Bathurst, sculptor Harrie Fasher has created a striking memorial to the Australian Light Horse and the last great cavalry charge at Beersheba. Hero Dirt Five years ago the old tin-mining town of Derby was a ghost town. But a move to construct some mountain bike trails helped trigger an economic revival. The town is now booming and has been transformed into a world-class biking destination. Au Naturel Fish bladders, bone marrow and milk protein are just some of the animal-derived agents that might be incorporated in the winemaking process. As demand for animal-friendly products increases, so too are the number of wineries using alternative production methods to create vegan wine.

A 200 million-year-old fossil - the bones of a giant sea dragon - has been discovered on the Jurassic coast of Britain. David Attenborough joins the hunt to bring this ancient creature's story to life.

In Antarctica, a seal pup takes its first journey under the ice. Leopard cubs must climb as they explore the river bank with mum. A tiny goby fish faces a huge obstacle - getting up a waterfall.

Andy Day sees how coatis follow mum's tail to safety in the forest. Eider ducks keep a wolf busy while their ducklings find a safe spot. The big mouthed hap is strangest of all - the young fish hide in its mouth.

In Africa, young meerkats learn to look out for their mob. Emperor penguins work together to keep their chicks fed and warm. The fry of convict fish stick together in a shoal to fool bigger fish.

Andy Day sees how lions aren't born with a loud roar. In Antarctica, a penguin chick can be heard by his mum despite 150,000 others. A baby macaque must learn the value of funny faces if she is to fit in.