Prince William, 38, is committed to combating climate change and last year launched the £50 million Earthshot prize to help come up with solutions. Over the weekend the Duke of Cambridge

took part in a video call with some of the UN's Young Champions of the Earth to discuss why optimism was key to tackling the world's environmental issues. Kensington Palace shared

a clip of William's latest engagement on Twitter with the message: "Why is optimism and inspiring people to work together to repair the planet so important? "The

@EarthshotPrize meets the UN Environment Programme’s Young Champions of the Earth Earth." During the call, which William carried out from the living room of his Norfolk residence Anmer

to have increasingly aligned himself with his late mother Princess Diana's more emotional approach to engagements. Judi said: "William’s use of emotive words and emotive body

language has increased during the pandemic. "He would have learned the trait of open expression of emotion from his mother Diana but there would have been even stronger pressure from

royal protocol and his military training to suppress his feelings in public." The expert also claimed that William's wife Kate, Duchess of Cambridge is likely to have influenced

his more laidback style. She added: "William starts with a controversial word: ‘Why?’. Coming from an older and more authoritative person it can sound judgmental and make an audience

defensive but he gets the tone right, sounding keen to learn rather than keen to criticise. "He also matches his body language to the cause, using cupped, weighing-the-problem hands

with splayed fingers to signal matching urgency and rolling his eyes up to the left dramatically while jutting his lower jaw. "These gestures signal that he is already on board with the

cause and just inviting the people on screen to add weight to something he already holds dear." According to the expert, the father-of-three takes a "paternal" approach to

the conversation. She said: "William then takes a semi-parental tone for the next comment section and his voice softens accordingly." Judi also claimed the Duke uses

"colloquial" language to put his audience at ease, saying: "He personalises his message and uses a more colloquial wording to emphasise that, suggesting some hands-on

experience and relationships with the faces he is scouring on screen. "‘Just so proud of everything you guys have done, it’s really fantastic’ is worded to form a direct message to the

people on screen, with his suppression of the word ‘I’ and the use of the word ‘guys’ making it sound relaxed and natural rather than regal and formal. "‘You’ve really had to take some

hits and some bumps along the way’ also implies his own close relationship with the project and the people involved via the use of empathy and then William adds a more powerful structure of

speech to gain maximum impact for his praise." According to Judi, the Duke uses a popular speech-making technique to get his point across. She said: "William switches to a famous

speech-making device of the Three Clusters, saying ‘They are inspiring’ ‘They are practical’ and ‘They are tangible’. "Creating a cluster of three points with the same formation and

sentence structure always resonates with an audience during a speech and it is a device used by many leaders and politicians to prompt applause and agreement. "It feels inspirational to

hear and the suggestion is that this part of William’s message is aimed at the rest of the world as well as the people in front of him."