The 39 Clues is a series of adventure novels written by a collaboration of authors, including Rick Riordan, Gordon Korman, Peter Lerangis, Jude Watson, Patrick Carman, Linda Sue Park, Margaret Peterson Haddix, Roland Smith, David Baldacci, Jeff Hirsch, Natalie Standiford, C. It consists of four series, The Clue Hunt, Cahills vs. They chronicle the adventures of two siblings, Amy and Dan Cahill, who discover that their family, the Cahills, has been the most influential family in history.The first story arc concerns Dan and Amy's quest to find the 39 Clues, which are ingredients to a serum that can create the most powerful person on Earth.
Amy and Dan pursue the Clues while evading the sabotage of other Cahills.
Under the initiative, roughly up to 0 million annually is available for appropriation by the Legislature for eligible projects to improve energy efficiency and expand clean energy generation in schools.
Eligible local educational agencies (LEAs) — including county offices of education, school districts, charter schools and state special schools—can request funding by submitting an energy expenditure plan application to the California Energy Commission.
First, the challenges in adequately identifying, and measuring, the varied consequences—both positive and negative—of such practices are illuminated, with Hidalgo himself recognising that ‘it is hard to accurately estimate the causal effects of medical emigration’.
Iain Brassington ( and a further comment in an accompanying e-letter: question the ways in which Hidalgo accounts for, and explains, the harms and benefits within his ethical analysis.
This month's feature article by Javier Hidalgo (, Editor's choice) focuses on the increasing trend for the recruitment of health workers in low-income countries by organisations within high-income countries.