Two young Chinese athletes practice Taekwondo techniques during a rehearsal on April 17 for an event to mark the 100-day countdown to the opening ceremony of the London 2012 Olympic Games

Photo: Feng Li/Getty Images

Handing off the torch

The $423 million Bird's Nest in Beijing — centerpiece of Beijing's Olympic Games in 2008 — looms in the background as two young Chinese athletes practice Taekwondo on April 17 during rehearsal for an event marking the 100-day countdown to London's 2012 Olympic Games on July 27. The hand off between host cities is part of the Olympic tradition.
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Olympic officials and the media admire a large set of Olympic Rings, created with more than 20,000 flowers and plants in London's Kew Gardens on April 18.

Photo: Oli Scarff/Getty Images

The final countdown

Olympic officials and the media meander by a large set of Olympic rings created with more than 20,000 flowers and plants in London's Kew Gardens on April 18.

The event marked the 100-day countdown and announced London's official Olympic motto: "Inspire a generation."

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Catie Leary ( @catieleary ) is a photo editor at MNN who focuses on travel, nature, science, animals and the arts.