Caroline de Guitaut, deputy surveyor of the King's Works of Art for the Royal Collection Trust, adjusts the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

Caroline de Guitaut, deputy surveyor of the King's Works of Art for the Royal Collection Trust, adjusts the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

Caroline de Guitaut, deputy surveyor of the King's Works of Art for the Royal Collection Trust, adjusts the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

A view of the detail of the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, displayed in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

A view of the detail of the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, displayed in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

A view of the Coronation Vestments, comprising of the Supertunica and the Imperial Mantle, which will be worn by Britain's King Charles during his coronation at Westminster Abbey, displayed in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

A view of the detail of the Imperial Mantle, which forms part of the Coronation Vestments and will be worn by Britain's King Charles during his coronation at Westminster Abbey, displayed in the Throne Room at Buckingham Palace, London, Britain April 26, 2023. Victoria Jones/Pool via REUTERS 

Demonstrators rally against Imperial Oil’s ongoing tailings pond leak, on Parliament Hill in Ottawa, Ontario, Canada April 20, 2023. REUTERS/Blair Gable 

Demonstrators rally against Imperial Oil’s ongoing tailings pond leak, in downtown Ottawa, Ontario, Canada April 20, 2023. REUTERS/Blair Gable 

Demonstrators rally against Imperial Oil’s ongoing tailings pond leak, in downtown Ottawa, Ontario, Canada April 20, 2023. REUTERS/Blair Gable 

Demonstrators rally against Imperial Oil’s ongoing tailings pond leak, on Parliament Hill in Ottawa, Ontario, Canada April 20, 2023. REUTERS/Blair Gable 

Demonstrators rally against Imperial Oil’s ongoing tailings pond leak, in downtown Ottawa, Ontario, Canada April 20, 2023. REUTERS/Blair Gable 

Japan's Emperor Naruhito with Empress Masako, second right, their daughter Princess Aiko, right, Crown Prince Akishino, third left, Crown Princess Kiko, second left, and their daughter Princess Kako, left, as they appear on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito accompanied with Empress Masako wave well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

People holding flags enter the Imperial Palace to congratulate Emperor Naruhito of Japan on his birthday on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Emperor Naruhito of Japan delivers his message, expressing his wishes during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Emperor Naruhito of Japan delivers his message, expressing his wishes during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Emperor Naruhito of Japan delivers his message, expressing his wishes during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Well-wishers cheer Japan's Emperor Naruhito as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

(L to R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Japan's Emperor Naruhito, accompanied by Empress Masako, waves to the well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, accompanied by Empress Masako and their daughter Princess Aiko, greets well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, accompanied by Empress Masako and their daughter Princess Aiko, waves towards the well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito's daughter Princess Aiko waves to the well-wishers as she appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito accompanied with Empress Masako wave well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito waves well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

People enter the Imperial Palace to congratulate Emperor Naruhito of Japan on his birthday on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

People enter the Imperial Palace to congratulate Emperor Naruhito of Japan on his birthday on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Security guard monitors people during the Emperor of Japan Naruhito's birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

People enter the Imperial Palace to congratulate Emperor Naruhito of Japan on his birthday on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Well-wishers wait to see Japan's Emperor Naruhito as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Well-wishers wait to see Japan's Emperor Naruhito as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Well-wishers wait to see Japan's Emperor Naruhito as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

(C to C-R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

(C to C-R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

(C to C-R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Well-wishers are escorted to see the Japan's Emperor Naruhito at the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Well-wishers cheer as they see Japan's Emperor Naruhito appear on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Well-wishers are escorted to see Japan's Emperor Naruhito as he appears on the balcony of the Imperial Palace to mark the emperor's 63rd birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito delivers a speech as Empress Masako, second right, their daughter Princess Aiko, right, Crown Prince Akishino, third left, Crown Princess Kiko, second left, and their daughter Princess Kako, left, appear on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, accompanied by Empress Masako and their daughter Princess Aiko, delivers a speech to well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, accompanied by Empress Masako and their daughter Princess Aiko, greets well-wishers as they appear on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, left, accompanied by Empress Masako, waves to well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, left, accompanied by Empress Masako, waves to well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito waves to well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

Japan's Emperor Naruhito, left, accompanied by Empress Masako, waves well-wishers as he appears on the balcony of the Imperial Palace to mark the emperor's 63th birthday in Tokyo Thursday, Feb. 23, 2023, in Tokyo. Eugene Hoshiko/Pool via REUTERS 

(L) Emperor Naruhito of Japan delivers his message, expressing his wishes during his birthday celebration, alongside Empress Masako, at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

(L to R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito’s birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Japan's Emperor Naruhito greets people during his birthday celebration at the Imperial Palace in Tokyo, Japan, February 23, 2023.Rodrigo Reyes Marin/Pool via REUTERS 

Britain's Prime Minister Rishi Sunak reacts during a visit with Microsoft founder Bill Gates at Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates react as they speak during a visit of the Imperial College University,, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak reacts during a visit with Microsoft founder Bill Gates at Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates react as they speak during a visit of the Imperial College University,, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Microsoft founder Bill Gates reacts during a visit with Britain's Prime Minister Rishi Sunak of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Microsoft founder Bill Gates reacts during a visit with Britain's Prime Minister Rishi Sunak of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Microsoft founder Bill Gates reacts during a visit with Britain's Prime Minister Rishi Sunak of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates speak with members of R-Leaf, parts of Crop Intellect, that is creating a technology aiming to turn air pollution into plant food, during a visit of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates speak with members of R-Leaf, parts of Crop Intellect, that is creating a technology aiming to turn air pollution into plant food, during a visit of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates speak with members of Econic, a startup developing technologies that enable the use of captured CO2 to make low-cost and sustainable plastics, during a visit of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS 

Britain's Prime Minister Rishi Sunak and Microsoft founder Bill Gates speak with members of Econic, a startup developing technologies that enable the use of captured CO2 to make low-cost and sustainable plastics, during a visit of the Imperial College University, in London, Britain, February 15, 2023. Justin Tallis//Pool via REUTERS