Change Reaction spent a week in the British capital, a city that has taken its turn at the center of the world.

There’s a lot that’s old about London, but there is even more that’s new—ways we found that the city and its eclectic population are driven to make things cleaner, more efficient and with an eye toward the future.

Click through the photos above for a peek inside our reporting. And stay tuned to Change Reaction for more stories, photos and videos from all over the UK this month and next.