Joyous Africans Take to the Rails, With China’s Help

DJIBOUTI — The 10:24 a.m. train out of Djibouti’s capital drew some of the biggest names in the Horn of Africa last month. Serenaded by a chorus of tribal singers, the crush of African leaders, European diplomats and pop icons climbed the stairs of the newly built train station and merrily jostled their way into the pristine, air-conditioned carriages making their inaugural run.

Saiga Antelopes Are Struck Again by a Plague in Central Asia

They found the first carcasses in late December, on the frozen steppes of Mongolia’s western Khovd province. By the end of January, officials in the region had recorded the deaths of 2,500 endangered saiga antelopes — about a quarter of the country’s saiga population — and scientists had identified a culprit: a virus called peste des petits ruminants, or P.P.R.