The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

The reconquest of the historic centre: urban conservation and gentrifcation in Puebla, Mexico

This is one of the first studies evaluating the experience of gentrification in a developing country. The conservation of the historic centre of Puebla, Mexico, is analysed with particular attention to the uses to which renovated properties are put and the nature and motivations of the agents involved. Gentrification in Puebla constitutes the symbolic reconquest of a space over which the local middle classes feared they had lost moral authority. The class and 'race' symbolism of conservation and gentrification is emphasised