This video and online calculator show how to calculate the molecular weight of a substance from the atomic weights given on the periodic table. Use the molecular weight to convert between the macroscopic scale (grams of a substance) and the microscopic scale (number of molecules of that substance).

The COVID-19 pandemic affected nearly every industry, and agriculture was no exception. However, the agricultural sector is no stranger to dealing with the impacts of disasters, particularly with heightened vulnerability from climate change. This data summary from the Food and Agriculture Organization of the United Nations explores the economic and nutritional consequences of disasters within the agricultural sector. The summary focuses on "the top five most impactful disasters (in terms of their toll on agricultural production systems) to strike least developed countries (LDCs) and low to middle income countries (LMICs) from 2008-2018." These five disasters are drought, floods, storms, pests, and wildfires. In addition to text summaries, the resource also embeds audio from farmers around the world, adding first-hand narrative to the story. Readers will also find informational figures detailing nutritional loss resulting from these disasters. Collectively, this information informs disaster management, and key management strategies are highlighted at the conclusion of the piece. Also available at the conclusion of the piece is a link to download the full report.