There are eight types of pangolins, and two of them are officially endangered. But all the other species are facing increasing levels of poaching and trafficking that could see these unique creatures disappear completely, without anyone even noticing.
The writing in Dayu Cave explains the impact of seven different droughts between 1520 and 1920. Even today, groups come to the cave to gather water, but they're no longer allowed to write on the walls.
The current crisis is only the beginning for residents displaced by devastating explosions at the Chinese port of Tianjin. Traces of cyanide and other toxic chemicals have been reported in the air, which have prompted further questions and concerns.