Maps of NOx Emission (IMAGE) Research Institute for Humanity and Nature Caption Mean top-down NOx emission in 2020 during (a) BAU (business-as-usual), and subsequent lockdown-phases (b)-(f). Credit Misra P. et al., 2021, <em>Scientific Reports</em>, Springer Nature doi.org/10.1038/s41598-021-87673-2 Usage Restrictions This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.