Some people and news media in China now start to blame  their own trials in cloud seeding for heavy snowfall that by now has killed at least 40 people. Quite a few buildings, a school among them (again), collapsed under the weight of the  snow,

testing the country's disaster preparedness and prompting fresh questions about Beijing's efforts to alter its weather.

Cloud seeding is one of the oldest and probably most tested methods to alter the weather (and eventually the climate). For some years now, it might be considered as part of  geoengineering techniques(see post November 4, Engineering snow in China).

Now, if cloud seeding is even slightly to blame for these storms, we might have to think twice about other methods to influence weather patterns or the whole climate - methods that have not been tested at all. Consider it a warning not to be to self-assured about meddling with the world's  weather...