dfjorque

Seems like WhatsApp has a large user base all over Latin America (no hard data, just what I gather from some comments I have read).

Also standard here in Chile. FB Messenger is somewhat common as well, but WhatsApp has the largest following by far.

Article about the study: http://www.nature.com/news/acid-bath-offers-easy-path-to-ste...

HN thread: https://news.ycombinator.com/item?id=7143630

Here's a video of the mouse embryo, with a beating heart and all: http://www.theguardian.com/science/video/2014/jan/29/mouse-e...

Those idioms are called "chengyu" (成语) and there are hundreds (or thousands) of them. Some of them come from ancient Chinese stories and poems and are pretty allegorical in nature; others, like (seemingly) the one mentioned in the article, are self-explanatory (to a Chinese speaker).

And Prince of Persia too...

A pretty interesting (if quite long) introductory reading about the subject:

http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.ht...