BBC World Service ·
Witness History
Sign in to favourite this programme– 13:00 UK time
Mexico's pioneering earthquake warning system began in 1991 after the devastating 1985 quake. Juan Manuel Espinosa Aranda explains how it was created.
BBC World Service ·
– 13:00 UK time
Mexico's pioneering earthquake warning system began in 1991 after the devastating 1985 quake. Juan Manuel Espinosa Aranda explains how it was created.