Sofia Rosenfeld has spent her life studying Arctic birds: traveling on expeditions to the Far North, following flocks of geese in a seaplane, and fighting to protect rare species. Now one of Russia’s leading ornithologists, a Doctor of Sciences in Biology, has been sentenced to three and a half years in a penal colony — for two 1,000-ruble donations to the Anti-Corruption Foundation (FBK). Rosenfeld partially admitted guilt: she explained that she had been unable to cancel the recurring payments because she was on an expedition without communications. T-invariant explains why the scientist refused to leave Russia, how the trial unfolded, and what Russian science stands to lose.

The Supreme Court of the Komi Republic has sentenced philosopher Nikolay Zyuzev to seven years in a strict-regime penal colony on treason charges. Zyuzev, who holds both Russian and Canadian citizenship, is one of the best-known scholars of the legacy of the Russian-American sociologist Pitirim Sorokin. He left Russia after the war began, but in the summer of 2025 he returned to his native village in Komi [a republic in northwestern Russia — T-invariant], where he was arrested. According to the FSB, the scholar was training leaders of national liberation movements among Russia’s small Indigenous peoples and receiving funding for his project from foreign organizations. T-invariant looks at what Zyuzev worked on, why he kept coming back to Russia, and what his friends and colleagues make of the treason charges.

Doctor of Medical Sciences Alexey Dudarev spent 25 years as the lead author of regular monitoring reports on pollution in the Arctic originating from Russia. After Russia’s full-scale invasion of Ukraine in 2022, official participation by Russian scientists in the Arctic Monitoring and Assessment Programme (AMAP) working group of the international Arctic Council was paused, but contacts resumed in 2025 — something Maria Zakharova of the Russian Foreign Ministry announced enthusiastically. The joy was short-lived: less than a year later, the FSB arrested Dudarev, and the new five-year Arctic pollution monitoring report will likely be released without up-to-date Russian data — for the first time since 1991.

The Gatchina District Court has resumed hearings in the case of Dmitry Bogmut, a technician at the Petersburg Nuclear Physics Institute named after B.P. Konstantinov (part of the Kurchatov Institute). After the onset of the war in Ukraine, Bogmut posted anti-war videos in a private thread on a forum with only a dozen users. He has been held in a pre-trial detention center for a year and a half and faces up to ten years in prison. Court hearings are regularly attended by a crowd of men in camouflage, seemingly organized as “extras”, identified as “Donbas volunteers.” Meanwhile, the names of activists supporting Bogmut have been publicly disclosed by state news agencies, leading to threats against them.