Read it here:
WTF is Dart?
for Norfolk Tech Journal, 2015-01-12
Internally, Google is reputed to use Java and C++ almost exclusively, with a little Python, but they’ve been developing the Go and Dart languages in the last few years. Go is interesting and revolutionary like celery is spicy yet is burning brightly in the tech community, with lots of high profile adopters. Dart, whilst not revolutionary either, does do useful and novel things, and I think it deserves a little more attention than it gets.