Low-intensity tillage has become more popular among farmers in the United States and many other regions. However, accurate data on when and where low-intensity tillage methods are being used remain scarce, and this scarcity impedes understanding of the factors affecting the adoption and the agronomic or environmental impacts of these practices. In this study, we used composites of satellite imagery from Landsat 5, 7, and 8, and Sentinel-1 in combination with producer data from about 5900 georeferenced fields to train a random forest classifier and generate annual large-scale maps of tillage intensity from 2005 to 2016. We tested different combinations of hyper-parameters using cross-validation, splitting the training and testing data alternatively by field, year, and state to assess the influence of clustering on validation results and evaluate the generalizability of the classification model. We found that the best model was able to map tillage practices across the entire North Central US region at 30 m-resolution with accuracies spanning between 75% and 79%, depending on the validation approach. We also found that although Sentinel-1 provides an independent measure that should be sensitive to surface moisture and roughness, it currently adds relatively little to classification performance beyond what is possible with Landsat. When aggregated to the state level, the satellite estimates of percentage low- and high-intensity tillage agreed well with a USDA survey on tillage practices in 2006 (R2 = 0.55). The satellite data also revealed clear increases in low-intensity tillage area for most counties in the past decade. Overall, the ability to accurately map spatial and temporal patterns in tillage should facilitate further study of this important practice in the United States, as well as other regions with fewer survey-based estimates.

The emergence of a global digital ecosystem has been a boon for global communication and the democratization of the means of distributing information. The internet, and the social media platforms and web applications running on it, have been used to mobilize pro-democracy protests and give members of marginalized communities a chance to share their voices with the world. However, more recently, we have also seen this technology used to spread propaganda and misinformation, interfere in election campaigns, expose individuals to harassment and abuse, and stir up confusion, animosity and sometimes violence in societies. Even seemingly innocuous digital technologies, such as ranking algorithms on entertainment websites, can have the effect of stifling diversity by failing to reliably promote content from underrepresented groups. At times, it can seem as if technologies that were intended to help people learn and communicate have been irreparably corrupted. It is easy to say that governments should step in to control this space and prevent further harms, but part of what helped the internet grow and thrive was its lack of heavy regulation, which encouraged openness and innovation. However, the absence of oversight has allowed dysfunction to spread, as malign actors manipulate digital technology for their own ends without fear of the consequences. It has also allowed unprecedented power to be concentrated in the hands of private technology companies, and these giants to act as de facto regulators with little meaningful accountability. So, who should be in charge of reversing the troubling developments in our global digital spaces? And what, if anything, can be done to let society keep reaping the benefits of these technologies, while protecting it against the risks?

Gender diversity has the potential to drive scientific discovery and innovation. Here, we distinguish three approaches to gender diversity: diversity in research teams, diversity in research methods and diversity in research questions. While gender diversity is commonly understood to refer only to the gender composition of research teams, fully realizing the potential of diversity for science and innovation also requires attention to the methods employed and questions raised in scientific knowledge-making. We provide a framework for understanding the best ways to support the three approaches to gender diversity across four interdependent domains — from research teams to the broader disciplines in which they are embedded to research organizations and ultimately to the different societies that shape them through specific gender norms and policies. Our analysis demonstrates that realizing the benefits of diversity for science requires careful management of these four interdependent domains.

In 1670 the Sicilian painter Agostino Scilla (1629–1700) devised an entirely new way of depicting fossils when he wrote and illustrated his Vain Speculation Undeceived by Sense (1670–1671), which argued that fossils were the remains of once living creatures and not mimetic stones. This essay explores the nature of Scilla’s graphic innovations, comparing his fossils drawings and Pietro Santi Bartoli’s engravings of them to earlier and contemporary images of fossils. Scilla captured the effect of time on nature by infusing his style of drawing with his philosophical understanding of what it means to see and to know. He made his drawing less rich in detail to focus on those which served his purpose. In particular, he made the first use of dotted lines in paleontological illustration to render his images dynamic theoretical interpretations rather than static depictions.

The digital transition of the world economy is now entering a phase of broad and deep societal impact. While there is one overall transition, there are many different sectoral transformations, from health and legal services to tax reports and taxi rides, as well as a rising number of transversal trends and policy issues, from widespread precarious employment and privacy concerns to market monopoly and cybercrime. This Research Handbook offers a rich and interdisciplinary synthesis of some of the recent research on the digital transformations currently under way.

This comprehensive study contains chapters covering sectoral and transversal analyses, all of which are specially commissioned and include cutting-edge research. The contributions featured are global, spanning four continents and seven different countries, as well as interdisciplinary, including experts in economics, sociology, law, finance, urban planning and innovation management. The digital transformations discussed are fertile ground for researchers, as established laws and regulations, organizational structures, business models, value networks and workflow routines are contested and displaced by newer alternatives.

This book will be equally pertinent to three constituencies: academic researchers and graduate students, practitioners in various industrial and service sectors and policy makers.

Chapter 17 of this book, The Impact of Digital Technologies on Innovation Policy, was written by Shorenstein APARC Research Scholar Kenji Kushida.

Highly readable yet deeply researched, this book serves as an essential guide to the many ways in which Japan has risen to become one of the world's most creative and innovative societies.

• Challenges conventional views of Japan as mired in two unproductive "lost decades" by documenting the myriad ways in which the nation has embraced creativity and innovation

• Describes the ways in which Japan has transformed our lives and explains the guiding principles of one of the world's least understood, most vibrantly creative societies

• Explains how Japan, as the world's first non-Western developed nation, can inspire other nations at a time when America's economic and social models are being challenged as never before

• Argues that, in a world that seems to have lost its direction in the face of threats ranging from terrorism to angry populism, Japan can assume greater leadership in preserving global peace and prosperity

Chapter 4 of this book, Departing from Silicon Valley: Japan's New Startup Ecosystem, was written by Shorenstein APARC Research Scholar Kenji Kushida.

Under what we call Abenergynomics, Japanese Prime Minister Abe Shinzō has used energy policy to support the growth objectives of Abenomics, even when the associated policies are publicly unpopular, opposed by utility companies, or harmful to the environment. We show how Abenergynomics has shaped Japanese policy on nuclear power, electricity deregulation, renewable energy, and climate change.