Google has started creating virtual field trips with museums, organizations around the world. Today, they “visited” the Minnesota Zoo, Seattle Aquarium, and flew a solar plane. All visits are recorded and can be played back as convenient.
The website has a calendar of upcoming events. If you see an event you can sign up to participate via Google Hangouts. All teachers have Google Hangouts enabled with their accounts. You may be selected to ask questions directly to the experts.
Check it out: http://connectedclassrooms.withgoogle.com/#