The Prime Minister opens a second Number 10 in Manchester, and Bex, Joe and Stevie explain what it means for where power sits in the UK. There's also a campaign asking museums to let children be as loud as they like, a big debate on whether it's ever good to be bored, and a giant mirror in space that could turn night into day. Plus the poetry shortlist for The Week Junior Book Awards, the Science+Nature Scavenger Hunt, and your chance to win this week's book.