Pangolin trafficking has reached critical levels, writes Wilson Center Global Fellow Sharon Guynup in May’s most popular post. Originally published in Mongabay, “Pangolins on the Brink” tracks the expansion of the deadly trade in this unique species across Africa, India, China, and even the United States.

Water-related terrorism is also on the rise, write Jennifer Veilleux and Shlomi Dinar in the second spot. China is getting ready to cash in on the emerging blockchain economy and in the melting Arctic, and rounding out the Top 5: frightening new analysis of the environmental risks of the ongoing conflict in Ukraine by Wim Zwijnenburg.

1. Pangolins on the Brink as Africa-China Trafficking Persists Unabated by Sharon Guynup

2. New Global Analysis Finds Water-Related Terrorism Is On the Rise by Jennifer Veilleux & Shlomi Dinar

3. The Blockchain Revolution: Q&A with Kaikai Yang by Qinqi Dai

4. China’s Ready to Cash In on a Melting Arctic by Sherri Goodman & Lyssa Freese

5. A Ukrainian Stand-Off: The Toxic Consequences of Armed Conflict in Donbass by Wim Zwijnenburg