Have realized that there is happening more here than just stressful stuff...DS has branched out from volcanoes (finally!) - he's got a science DVD and now he is enjoying (and learning by heart!) not just the volcano chapter, but also the chapters about planets and space, the moon and rocket ships, the weather - he is extremely interested in the reasons behind summer and winter, night and day, thundestorms and hurricanes...and our house is rather often, a rocket, and we're all astronauts, even the baby!
I have recently had occasion to read up on telling apart issues arising from giftedness and from AD(H)D and have come to the conclusion that when you can't get a newly four-year-old to stop jumping and spinning around on your mattress when it's time to go to sleep it might be AD(H)D, but it's probably giftedness when he excitedly tells you he is earth being orbited by the sun and right now it's day on his front and night on his back and you are immediately suckered into explaing "no no, you're orbiting the sun yourself - look I'll be the sun beaming at you and you're orbiting me and now it's day - um, back into bed! now!"