Kai Shu is a Ph.D. student and research assistant at the Data Mining and Machine Learning (DMML) Lab at Arizona State University. He received his B.S./M.S. from Chongqing University in 2012 and 2015, respectively. His research interests include fake news detection, social computing, data mining, and machine learning. He was awarded ASU CIDSE Doctorial Fellowship 2015, the 1st place of SBP Disinformation Challenge 2018, University Graduate Fellowship, and various scholarships. He co-presented two tutorials in KDD 2019 and WSDM2019, and has published innovative works in highly ranked journals and top conference proceedings such as ACM KDD, WSDM, WWW, CIKM, IEEE ICDM, IJCAI, AAAI, and MICCAI. He also worked as a research intern at Yahoo! Research and Microsoft Research in 2018 and 2019, respectively.Huan Liu is a professor of Computer Science and Engineering at Arizona State University. Before he joined ASU, he worked at Telecom Australia Research Labs and was on the faculty at the National University of Singapore. His research interests are in data mining, machine learning, social computing, and artificial intelligence, investigating interdisciplinary problems that arise in many real-world, data-intensive applications with high-dimensional data of disparate forms such as social media. He is a co-author of Social Media Mining: An Introduction (Cambridge University Press). He is a founding organizer of the International Conference Series on Social Computing, Behavioral-Cultural Modeling, and Prediction, Field Chief Editor of Frontiers in Big Data and its Specialty Chief Editor in Data Mining and Management. He is a Fellow of ACM, AAAI, AAAS, and IEEE.

• Acknowledgments.- Introduction.- What News Content Tells.- How Social Context Helps.- Challenging Problems of Fake News Detection.- Bibliography.- Authors' Biographies .

Kai Shu is a Ph.D. student and research assistant at the Data Mining and Machine Learning (DMML) Lab at Arizona State University. He received his B.S./M.S. from Chongqing University in 2012 and 2015, respectively. His research interests include fake news detection, social computing, data mining, and machine learning. He was awarded ASU CIDSE Doctorial Fellowship 2015, the 1st place of SBP Disinformation Challenge 2018, University Graduate Fellowship, and various scholarships. He co-presented two tutorials in KDD 2019 and WSDM2019, and has published innovative works in highly ranked journals and top conference proceedings such as ACM KDD, WSDM, WWW, CIKM, IEEE ICDM, IJCAI, AAAI, and MICCAI. He also worked as a research intern at Yahoo! Research and Microsoft Research in 2018 and 2019, respectively.Huan Liu is a professor of Computer Science and Engineering at Arizona State University. Before he joined ASU, he worked at Telecom Australia Research Labs and was on the faculty at the National University of Singapore. His research interests are in data mining, machine learning, social computing, and artificial intelligence, investigating interdisciplinary problems that arise in many real-world, data-intensive applications with high-dimensional data of disparate forms such as social media. He is a co-author of Social Media Mining: An Introduction (Cambridge University Press). He is a founding organizer of the International Conference Series on Social Computing, Behavioral-Cultural Modeling, and Prediction, Field Chief Editor of Frontiers in Big Data and its Specialty Chief Editor in Data Mining and Management. He is a Fellow of ACM, AAAI, AAAS, and IEEE.

• Acknowledgments.- Introduction.- What News Content Tells.- How Social Context Helps.- Challenging Problems of Fake News Detection.- Bibliography.- Authors' Biographies .