Total Maximum Daily Load

The transposable genetic elements, or transposons, as they are now known, have had a tumultuous history. Discovered in the mid-20th century by Barbara McClintock, they were initially received with puzzlement. When their genomic abundance began to be apparent, they were categorized as “junk DNA” and acquired the label of parasites. Expanding understanding of gene and genome organization has revealed the profound extent of their impact on both.

Taking on the key issues in urban design, Shaping the City examines the critical ideas that have driven these themes and debates through a study of particular cities at important periods in their development. As well as retaining crucial discussions about cities such as Los Angeles, Atlanta, Chicago, Detroit, Philadelphia, and Brasilia at particular moments in their history that exemplified the problems and themes at hand like the mega-city, the post-colonial city and New Urbanism, in this new edition the editors have introduced new case studies critical to any study of contemporary urbanism China, Dubai, Tijuana and the wider issues of informal cities in the Global South.

Annual Plant Reviews, Volume 13

Plastids are essential plant organelles, vital for life on earth. They are important not just as photosynthetic organelles (chloroplasts) but also as sites involved in many fundamental intermediary metabolic pathways. Over the last decade, plastid research has seen tremendous advances and an exciting new picture is emerging of how plastids develop and function inside plant cells.