A third added, “What a lovely engagement between father and son, king and his heir. The environment is a shared passion for them both — this is the perfect event!”

One follower summed it up: “This joint engagement was a lovely surprise! It’s always wonderful to see father and son out and about together. I’m very excited to see our Prince of Wales in my country next month for his Earthshot Prize and COP30.”

Prince William to Represent the King in Brazil

Kensington Palace confirmed that Prince William will travel to the Brazilian city of Belém next month to attend COP30 on behalf of King Charles. The prince will already be in Brazil for the fifth annual Earthshot Prize ceremony, taking place in Rio de Janeiro on November 5.

COP30, the 30th United Nations Climate Conference, will run from November 10 to 21 — an event traditionally close to the King’s heart, as he has led or supported several past summits.

A Shared Legacy of Environmental Leadership

Both King Charles and Prince William have long been advocates for protecting the planet. As far back as 1970, at just 21 years old, Charles warned in a landmark speech about the growing dangers of plastic pollution.

Prince William has often spoken about how his father inspired his environmental commitment. He has recalled that Charles would take him and Prince Harry litter-picking during their childhood to teach them respect for nature.

In 2020, following his father’s example, William founded The Earthshot Prize — a global environmental award recognizing five winners each year for groundbreaking solutions to environmental challenges.

Their joint appearance this week reflected not only a rare public moment between father and son but also their enduring shared mission: to protect the planet for future generations.