It's 30 years since CBBC started airing short links between shows. To celebrate, Hacker has brought together the finest presenters, past, present and even a new one, to reminisce and laugh at a few bloopers.

Britain's countryside is undergoing a revolution. For decades our farmland wildlife has been in serious decline - a depressing tale of hedges ripped out, marshes drained and fields saturated with chemicals. Now something remarkable is happening - wildlife is starting to recover, and across our countryside there's real optimism that we can combine wildlife with productive farms. Thanks to the dramatic rise of organic farming and a brand new system of subsidies, animals like lapwing, skylark, dormice and barn owls are making a comeback. In Devon horseshoe bats are benefiting from organic cow pats, in Yorkshire black grouse are thriving thanks to later hay making. Could our countryside one day return to its former wild glory?

An ancient oak wood in the heart of England is as full of beauty and drama as anywhere on Earth. Philippa Forrester spends a year witnessing its secret life - the sparrow-hawk terrorising blue tits, fox cubs learning to stalk rabbits and a buzzard looking for love.

Robot Wars Extreme was a series of special episodes of the television game show Robot Wars.

Teams of amateur robot fighting enthusiasts battle it out over a series of rounds in a huge purpose-built arena aiming to become the Robot Wars Champion.

Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.

Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.

Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.