A number of high profile people in science, technology, and so-forth were asked 'what are you optimistic about and why?'
Chris Dibona of Google looks forward to the day when we have high resolution, up-to-date images of the earth (like Google Earth and Microsoft Live but much better). He says,
"One cannot tell you that they are not destroying villages in Sudan if you can view the burned out carcasses of the homes of the slaughtered. One cannot intimate that the impact of a dam is minimal as humanity watches countless villages being submerged in real time. One cannot paint a war as a simple police action when the results of the carpet bombing will be available in near real time on the internet."
He finishes off by saying,
"Can our leaders stand before us and say a thing is not occurring if we can see via our low earth orbiting eyes that it is in fact occurring? Only the truly deluded will be unable to see and then perhaps we can remove them and their psychopaths from power. A more honest existence, with humankind understanding the full, global, impact of its decisions, is in our future if we can reach it."
I was discussing this with Hubby and his intial reaction was, all well and good but instead wouldn't it be better to be optimistic about eradicating poverty, starvation or disease? A valid comment but then I pointed out the following ...
I blogged a while ago about Al Gore and his "An Inconvenient Truth".
(Unfortunately, I've not had a chance to see it yet but I believe it's now out on DVD.) He has now started to train others to give his presentation (on which the movie was based) and the website for this is www.theclimateproject.org
The website loads with a random image from a number of alternatives, one of which struck me quite forcefully so I beg Al Gore's forgiveness in posting the image here (clearly all copyright belongs to The Climate Project):

This image very forcefully demonstrates how useful and powerful Chris Dibona's vision of the future would be. Obviously this image was specifically chosen to support Al Gore's campaign and I must say I have been unable to verify this image but it shows how high resolution images can make a dramatic point.
I'll finish this off with what I feel is an appropriate quote from Neil Armstrong:
“It suddenly struck me that that tiny pea, pretty and blue, was the Earth. I put up my thumb and shut one eye, and my thumb blotted out the planet Earth. I didn't feel like a giant. I felt very, very small.”