Peter I'm about 500 miles north of Ealing so I don't really know what weather conditions you've had (better than ours I guess). The most likely cause of curdling is a lightning storm but it's strange that you've had curdling milk from different suppliers unless you've had local storms in Ealing? This thread by brainboxes sort of explains the effect:-http://www.thenakedscientists.com/forum/index.php?topic=16693.0 We had a humdinger of a strike about 1.5 miles away yesterday which caused my wife's car engine to die whilst she was driving,it's OK now though she's still a bit shaken! Our milk survived probably because it was in the fridge (Faraday cages and all that). Personally I don't think it requires actual thunder and lightning, just the megavolts and amps of a highly charged atmosphere,but that's just me guessing!
Tony Wood ● 3816d