Last year, catastrophe hit saiga antelopes in Kazakhstan. About 200,000 of these critically endangered antelopes died in Betpak-Dala in May, deeply worrying conservationists. The deaths, scientists eventually found, were most likely caused by bacterial infection. But there may be hope for these severely threatened migratory mammals. A recent aerial survey of saigas carried out from April 18 to May 3, 2016 has revealed that the numbers of all three saiga populations in Kazakhstan—Ural, Betpak-Dala and…