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Duchess of Cambridge Self-isolating After COVID-19 Contact

Britain's Catherine, Duchess of Cambridge is shown around the Wimbledon Museum during her official visit on day five of Wimbledon at The All England Lawn Tennis and Croquet Club, Wimbledon, London, Britain July 2, 2021. John Walton/Pool via REUTERS
Britain's Catherine, Duchess of Cambridge is shown around the Wimbledon Museum during her official visit on day five of Wimbledon at The All England Lawn Tennis and Croquet Club, Wimbledon, London, Britain July 2, 2021. John Walton/Pool via REUTERS
    Asharq Al-Awsat
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Duchess of Cambridge Self-isolating After COVID-19 Contact

Britain's Catherine, Duchess of Cambridge is shown around the Wimbledon Museum during her official visit on day five of Wimbledon at The All England Lawn Tennis and Croquet Club, Wimbledon, London, Britain July 2, 2021. John Walton/Pool via REUTERS
Britain's Catherine, Duchess of Cambridge is shown around the Wimbledon Museum during her official visit on day five of Wimbledon at The All England Lawn Tennis and Croquet Club, Wimbledon, London, Britain July 2, 2021. John Walton/Pool via REUTERS

British royal Kate, Duchess of Cambridge, is self-isolating and has cancelled her engagements after someone she came into contact with subsequently tested positive for COVID-19.

"Last week the Duchess of Cambridge came into contact with someone who has subsequently tested positive for COVID-19," a spokesperson for Kensington Palace said.

"Her Royal Highness is not experiencing any symptoms, but is following all relevant government guidelines and is self-isolating at home."

The Duchess of Cambridge put in some work in the kitchens during a visit to Wimbledon on Day 5.

The duchess helped prepare strawberry desserts in one of the kitchens at the All England Club which has been used to distribute hot meals as part of the response to the coronavirus pandemic.

She also visited one of the outside courts to watch Jamie Murray of Britain play a doubles match.

The duchess is a patron of the All England Club and has been a regular visitor to the royal box on Centre Court, often alongside her husband, Prince William.

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This Ancient Tadpole Fossil Is the Oldest Ever Discovered

A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
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This Ancient Tadpole Fossil Is the Oldest Ever Discovered

A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)
A fossil of the world's oldest tadpole, which coexisted with dinosaurs in the Middle Jurassic about 165 million years ago, is pictured next to a 3D-printed representation of the tadpole and of a fully developed frog, in Buenos Aires, Argentina October 28, 2024. (Reuters)

Scientists have discovered the oldest-known fossil of a giant tadpole that wriggled around over 160 million years ago.

The new fossil, found in Argentina, surpasses the previous ancient record holder by about 20 million years.

Imprinted in a slab of sandstone are parts of the tadpole's skull and backbone, along with impressions of its eyes and nerves.

“It's not only the oldest tadpole known, but also the most exquisitely preserved,” said study author Mariana Chuliver, a biologist at Buenos Aires’ Maimonides University.

Researchers know frogs were hopping around as far back as 217 million years ago. But exactly how and when they evolved to begin as tadpoles remains unclear.

This new discovery adds some clarity to that timeline. At about a half foot (16 centimeters) long, the tadpole is a younger version of an extinct giant frog.

“It's starting to help narrow the timeframe in which a frog becomes a frog,” said Ben Kligman, a paleontologist at the Smithsonian National Museum of Natural History who was not involved with the research.

The results were published Wednesday in the journal Nature.

The fossil is strikingly similar to the tadpoles of today — even containing remnants of a gill scaffold system that modern-day tadpoles use to sift food particles from water.

That means the amphibians' survival strategy has stayed tried and true for millions of years, helping them outlast several mass extinctions, Kligman said.