By Nathan Williams
BBC News
The Prince and Princess of Wales person visited a foundation that works with young radical astatine hazard of municipality violence, arsenic their US travel continues.
They are successful America to manus retired awards for their Earthshot Prize - fixed to innovative ideas for the environment.
But the travel risks being overshadowed by a racism enactment involving Prince William's godmother.
Lady Susan Hussey resigned aft asking a achromatic British foundation brag wherever she was "really" from.
Prince William's spokesperson has said "racism has nary spot successful our society".
This is the royal couple's archetypal large planetary quality since the decease of the Queen, and since they became the Prince and Princess of Wales.
Their travel volition culminate successful a star-studded prize ceremonial connected Friday, successful Boston - location municipality of erstwhile US President John F Kennedy, connected whose "Moonshot" situation the Earthshot Prize is based.
The prince's member Harry, the Duke of Sussex, and Meghan are not expected to be the awards ceremony.
But connected the 2nd time of Prince William and Catherine's trip, the trailer for Harry and Meghan's "behind closed doors" Netflix bid was released.
The minute-long clip features antecedently unseen pictures of the Duke and Duchess of Sussex, including tearful images of Meghan.
The BBC's Daniela Relph, who is successful Boston, says not to expect the Prince and Princess of Wales to remark connected the Netflix bid during their US trip. Royal sources accidental they privation to ore connected gathering communities and section people.
Prince William and Catherine visited Greentown Labs, adjacent Boston, which brings unneurotic startups and investors that are trying to make exertion that volition enactment the environment.
It is described arsenic a assemblage for clime pioneers, and has supported much than 500 companies since it was founded successful 2011.
During the visit, eight-year-old Henry Dynov-Teixeira, dressed arsenic a guardsman implicit with replica bearskin, handed the Princess of Wales a clump of reddish roses.
The royals aboriginal visited Roca, a foundation supporting disadvantaged young radical astatine hazard of oregon progressive with municipality violence, praising their "incredible" work.
The mates were introduced to Molly Baldwin, main enforcement serviceman of Roca, who founded the organisation successful 1988 to enactment with a tiny radical of high-risk young people.
William said: "It's trying to get the connection crossed that there's a grey country betwixt erstwhile you look astatine a young idiosyncratic and spot a spread betwixt the imaginable they person and the occupation they cause.
"As a nine however bash we tackle that? There is truthful overmuch happens successful betwixt and determination is truthful overmuch imaginable there."
William and Catherine took their archetypal walkabout of the travel successful Chelsea, which is adjacent to Boston, wherever they received an enthusiastic welcome, with 1 young pistillate collapsing successful tears.
Later successful the day, they toured the Boston Harbour Defences with the politician of the city, to perceive astir however the country is contending with rising oversea levels.
Five winners of the Earthshot Prize volition beryllium announced successful Boston connected Friday - each of whom volition beryllium fixed £1m ($1.2m) to make their biology projects.
The awards ceremonial volition beryllium a premix of bully causes and amusement - performers see Billie Eilish, Annie Lennox, Ellie Goulding and Chloe x Halle.
Environmental campaigner Sir David Attenborough volition dependable the opening of the ceremony.
Prince William has said the Earth is astatine a "tipping point" and the awards are intended to enactment innovative ways of reducing biology damage.