It's the best news we've had to give the country for some years now.

I'd say the toughest audience to get right now in news is the 18-to-34 year olds -- almost all of the network and cable news programs skew older than 50.

It is possible that some students know what drugs are and are not included in the tests, and migrate toward using those not included.

Most declines halted this year.

What is significant is that the use of these substances has declined substantially since the recent peak levels reached in the mid-1990s.

We're also seeing an increase in the use of these drugs in young adults.