这是华尔街日报的报道。

原文地址http://online.wsj.com/article/SB121124372394605609.html

After Quake, Attention Grows
On Early-Warning Systems
By LOUISE RADNOFSKY
May 20, 2008; Page A16

Early in May, NASA earth scientists monitoring infrared images of the earth noticed unusual patterns in southwestern China. One sent an email to colleagues, noting: Something is happening in Sichuan province.