Too much radiation I would assume.
No. Atomic Betty ended in 2008.
Nobody knows for sure, it's up to the studio to decide
In the atomic cartoons website, they said that they're making a sequel to Atomic Betty called Atomic Betty Redux(which is the equivalent of season 4 of Atomic Betty and takes place after the episode The Future Is Now). However, they're going to release it in either 2011 or 2012
Sometime after December
The Best of Betty - 2011 was released on: USA: June 2011
The cast of Betty and Dorothy - 2011 includes: Betty Fawbert as herself Dorothy Kibbat as herself
It's not going to return ever due to budget constraints, it will be left at that
Betty Thatcher died on 2011-08-15.
Betty Taylor - actress - died in 2011.
Betty Lowman Carey died in 2011.
Betty Blue Eyes was created in 2011.
Betty Neumar died on 2011-06-13.