Near-Earth satellite measurements in the extreme ultraviolet examine a charged torus produced by volcanoes on Jupiter’s moon Io. Authors: K. Yoshioka, G. Murakami, A. Yamazaki, F. Tsuchiya, T. Kimura, M. Kagitani, T. Sakanoi, K. Uemizu, Y. Kasaba, I. Yoshikawa, M. Fujimoto

Millimeter-wave emission is detected from branched carbon-chain molecules that may form on interstellar dust-grain surfaces. Authors: Arnaud Belloche, Robin T. Garrod, Holger S. P. Müller, Karl M. Menten

GPS measurements of crustal rebound in the western U.S. quantify drought-induced regional water depletion. Authors: Adrian Antal Borsa, Duncan Carr Agnew, Daniel R. Cayan

A model tracing the path of deuterium in the solar system shows that its abundance hails from the parent interstellar medium. Authors: L. Ilsedore Cleeves, Edwin A. Bergin, Conel M. O’D. Alexander, Fujun Du, Dawn Graninger, Karin I. Öberg, Tim J. Harries

A pair of perovskite solar cells can power efficient hydrogen generation from water. [Also see Perspective by Hamann] Authors: Jingshan Luo, Jeong-Hyeok Im, Matthew T. Mayer, Marcel Schreier, Mohammad Khaja Nazeeruddin, Nam-Gyu Park, S. David Tilley, Hong Jin Fan, Michael Grätzel

Spectroscopy in the laboratory elucidates key steps in ozone’s atmospheric reaction with unsaturated hydrocarbons. Authors: Fang Liu, Joseph M. Beames, Andrew S. Petit, Anne B. McCoy, Marsha I. Lester

Adsorbed water enables proton-transfer steps that lower the activation barrier for carbon monoxide oxidation. [Also see Perspective by Mullen and Mullins] Authors: Johnny Saavedra, Hieu A. Doan, Christopher J. Pursell, Lars C. Grabow, Bert D. Chandler

A >2-million-year soil chronosequence reveals how the environment can regulate species plant diversity. Authors: Etienne Laliberté, Graham Zemunik, Benjamin L. Turner

The molecular pathways that regulate an essential adult stem cell lineage in plant stomata are dissected. Authors: On Sun Lau, Kelli A. Davies, Jessica Chang, Jessika Adrian, Matthew H. Rowe, Catherine E. Ballenger, Dominique C. Bergmann

An assemblage of obsidian artifacts suggests independent origins of stone knapping in different hominin populations. Authors: D. S. Adler, K. N. Wilkinson, S. Blockley, D. F. Mark, R. Pinhasi, B. A. Schmidt-Magee, S. Nahapetyan, C. Mallol, F. Berna, P. J. Glauberman, Y. Raczynski-Henk, N. Wales, E. Frahm, O. Jöris, A. MacLeod, V. C. Smith, V. L. Cullen, B. Gasparian

New fossils of the sail-finned predatory dinosaur Spinosaurus reveal that it lived in and near water. Authors: Nizar Ibrahim, Paul C. Sereno, Cristiano Dal Sasso, Simone Maganuco, Matteo Fabbri, David M. Martill, Samir Zouhri, Nathan Myhrvold, Dawid A. Iurino

Dopamine promotes spine structural plasticity during a narrow time window in mouse neuron distal dendrites. Authors: Sho Yagishita, Akiko Hayashi-Takagi, Graham C.R. Ellis-Davies, Hidetoshi Urakubo, Shin Ishii, Haruo Kasai

The structure of an inhibitor bound to nitrogenase reveals rearrangements in the active-site metallocluster. [Also see Perspective by Hognom] Authors: Thomas Spatzal, Kathryn A. Perez, Oliver Einsle, James B. Howard, Douglas C. Rees

A mutation in a single copy of the CTLA4 gene in people is associated with immune dysfunction. [Also see Perspective by Rieux-Laucat and Casanova] Authors: Hye Sun Kuehn, Weiming Ouyang, Bernice Lo, Elissa K. Deenick, Julie E. Niemela, Danielle T. Avery, Jean-Nicolas Schickel, Dat Q. Tran, Jennifer Stoddard, Yu Zhang, David M. Frucht, Bogdan Dumitriu, Phillip Scheinberg, Les R. Folio, Cathleen A. Frein, Susan Price, Christopher Koh, Theo Heller, Christine M. Seroogy, Anna Huttenlocher, V. Koneti Rao, Helen C. Su, David Kleiner, Luigi D. Notarangelo, Yajesh Rampertaap, Kenneth N. Olivier, Joshua McElwee, Jason Hughes, Stefania Pittaluga, Joao B. Oliveira, Eric Meffre, Thomas A. Fleisher, Steven M. Holland, Michael J. Lenardo, Stuart G. Tangye, Gulbu Uzel

This issue of Science includes the program of the 2015 AAAS Annual Meeting. 2015 “Session I” Meetings will be held between January and May in California and Texas in the United States, and internationally in Lucca (Barga), Italy and Hong Kong, China. A PDF of the program as it appears in this issue is available here; for more information on the meeting (including registration forms and information on accommodations), please visit www.grc.org.

A weekly roundup of information on newly offered instrumentation, apparatus, and laboratory materials of potential interest to researchers.

On this week's show: Tracing the roots of an ancient stone-age technology and a daily news round up with David Grimm.

The CRISPR-Cas9 system is revolutionizing genomic engineering and equipping scientists with the ability to precisely modify the DNA of essentially any organism. Just how powerful is this technique? The ability for precision genome engineering comes with the potential to enhance food production, medicinal discoveries, and energy solutions, to name a few. In this booklet, we invite you to explore a selection of Science articles that highlight how this technique has grown into one of the most powerful genomic engineering tools to date. CRISPR-Cas9 (PDF, 14.6 MB)CRISPR-Cas9 (PDF, low resolution version, 3.16 MB)Read the e-bookletThis booklet brought to you by the Science/AAAS Custom Publishing Office.DOI: 10.1126/science.opms.sb0002

On 3 July 1880, “a weekly journal of scientific progress” published its first research articles under the banner Science. From that original print medium, the inaugural set of papers has been reprinted, photocopied, posted online, converted to PDF, and even etched in glass blocks to serve as special gifts. Being part of the vanguard is indeed a privilege, and opportunities to be one of the first are rare. For that reason, I proudly announce that Science Advances, a new open-access journal for all of the sciences, officially joins the Science family of journals (Science, Science Translational Medicine, and Science Signaling) and is now accepting submissions (go to www.scienceadvances.org). In February 2015, the inaugural papers will be released, heralding the start of something big in scope, reach, and influence. Author: Marcia McNutt

The war on environmental degradation has a powerful new ally: Pope Francis. Prompted by a Joint Workshop of the Pontifical Academy of Sciences and the Pontifical Academy of Social Sciences on sustainability that was convened in May 2014, the Vatican has articulated some of its strongest environmental statements to date, calling for all of us to take personal responsibility and redirect our relationship with nature to ensure the future habitability and sustainability of this planet (see the Perspective on p. 1457). The problems that motivate the Vatican are no different from those that concern the scientific community: depletion of nonrenewable resources, loss of ecosystem services, and risks from changing climate. But what the Vatican contributes is the rationale for taking action: because it is our moral responsibility to bequeath a habitable planet to future generations. Author: Marcia McNutt

By tracking meteorite falls, camera and radar networks help searchers find precious fragments. Author: Eric Hand

With more sensitive genetic tests, researchers are hunting the roots of disease in the human “mosaic.” Author: Kelly Servick

Science communicators and some highly cited researchers, but few women, make top 50 most followed list. Author: Jia You

Prominent academics recommend growth in federal basic research budget that matches previous golden era Author: Jeffrey Mervis

Biologist Russell Gray uses evolutionary ideas to probe the origin of languages and complex thinking. Author: Virginia Morell

Can a genetic test to predict a person's level of placebo response help new drugs win approval? Author: Kelly Servick

Linking biomechanical and evolutionary analysis helps to create viable biomimetic products Author: S. N. Patek

Probing the interplay between the electronic and nuclear spins in organic semiconductors [Also see Report by Malissa et al.] Author: Peter A. Bobbert

The radioactive superheavy element seaborgium can form a carbonyl compound during its short lifetime [Also see Report by Even et al.] Author: Walter Loveland

Structures of a multisubunit protein-RNA complex reveal how the CRISPR system recognizes DNA targets [Also see Research Articles by Jackson et al. and Mulepati et al.] Authors: Yan Zhang, Erik J. Sontheimer