What happens when melting ice reveals buried nuclear waste from a foreign power originally there at the behest of a colonial power? Greenland may find out in the years ahead, according to research by Jeff and William Colgan about a Cold War-era U.S. military base long thought buried beneath an ice cap.

Many new stories were among the most read last month. Joining the Colgans were a Wilson event on the climate efforts of small islands, a breakdown of the worrying state of many large lakes, five things to watch with new UN Secretary-General António Guterres, exploration of a violent internal flare-up over water in India, and an explanation for why so few African farmers are adopting “climate-smart agriculture.”

1. Melting Ice Threatens to Expose Former U.S. Nuclear Base in Greenland, Jeff Colgan and William Colgan

2. Necessity Is the Mother of Invention: Islands as the Vanguard of Climate Adaptation, Lynae Bresser

3. Changing the Narrative on Fertility Decline in Africa, Eunice Mueni

4. Striving for Sustainability at 10 Billion: The 2016 World Population Data Sheet, Jeff Jordan and Peter Goldstein

5. Silently, Quickly, and Completely: The World’s Lakes in Peril, Cara Thuringer

6. New UN Secretary-General Brings Humanitarian Experience, But Will It Matter? 5 Things to Watch, Joseph Cassidy

7. Why Women’s Empowerment Must Start With Land Rights, Justine Uvuza

8. In Drought-Stricken India, Water Tensions Spill Into the Streets, Sreya Panuganti

9. White House Announces Steps to Address Climate and National Security Alongside New Intelligence Assessment, Schuyler Null, Cara Thuringer, and Lauren Herzer Risi

10. Pathways to Climate-Smart Agriculture in Africa, Anam Ahmed