Karen Hunter tweeted

Ever wondered how ancient temple gates would opened automatically after altar sacrifices?

It seems like a long time ago that I once wondered if HM Queen Rania was a blogger.

...also I had this shot of 3 children pushing a garbage can...and at that point I wondered, where is our First lady??? with all her talks about children on the streets!!!!

So I asked myself Okay, is this a model for creation, this adaptation that we do?

And I thought about this child's toy hence, the title of my talk and I wondered if you could use the same physics that makes that thing spin 'round in the child's radiometer, to levitate particles into the upper atmosphere and make them stay there.

As a grad student, Cynthia Breazeal wondered why we were using robots on Mars, but not in our living rooms. The key, she realized training robots to interact with people. Now she dreams up and builds robots that teach, learn and play. Watch for amazing demo footage of a new interactive game for kids.