  On BBC One tonight, nature documentary fans will be pleased to hear national treasure David Attenborough is returning to narrate new documentary Seven Worlds, One Planet
 The new series will showcase both adorable animals and the brutality of the animal kingdom across all seven continents
 It will also explore the impact of human interference and global warming on animal populations
 Starring adorable fluffy albatross chicks, snub-nosed monkeys and a rather terrifying looking sea spider, Seven Worlds will focus on “unknown, unseen, and unexpected wildlife stories”
 The first episode, shown tonight at 6.15pm, will feature the Antarctic. The BBC said Seven Worlds One Planet took 1,794 days to shoot and required a team of 1,500 people and 92 separate film shoots
    READ MORE   Sarah Ferguson reveals ‘highlight of my life’ as she celebrates bday  David Attenborough is known for his work on previous documentaries like Planet Earth, Blue Planet and Dynasties - and it was working which helped him cope with his wife’s death
 David was married to Jane Elizabeth Ebsworth Oriel for 47 years before her death in 1997
 Jane was from Merthyr Tydfil, Wales, and died after collapsing with a brain haemorrhage aged 70
 At the time, David was away filming in New Zealand.   The presenter had been filming The Life of the Birds as Jane fell ill, but made it back to the UK to be with his wife before she died
 In his memoir Life on Air, David wrote about Jane’s final moments. When he flew home he found her in a coma, and a doctor suggested he hold her hand
 He said: “She did, and gave my hand a squeeze.    READ MORE   David Attenborough blasts EU for interfering in Brexit rant  “The focus of my life, the anchor had gone…now I was lost
” But throwing himself into his work and travelling helped David to cope with the loss
 He said in 2009: “I coped by working. It was the most fantastic luck that I was able to work
 “If my life had gone a different way - say I had gone into the oil business, which I once considered doing - I would have been out at 60
” Trending    David and Jane had two children, Robert and Susan who are both in their 50s
 Their daughter is a former primary school headmistress and still lives in the UK
 While their son is a senior lecturer in biological anthropology at the Australian National University in Canberra
 David lived in his families home in Richmond Upon Thames, London, after his wife died 11 years ago
   
