Five Best Ideas of the Day: October 20

1. Early intervention for young people could halt schizophrenia before it starts.

By Amy Standen at National Public Radio

2. Next generation air traffic control management can reduce delays and frustration at the airport.

By Aaron Dubrow at the National Science Foundation

3. Alabama prisons are at 190% capacity. Sentencing reforms are slowing prison population growth, but much work remains.

By Kala Kachmar in the Montgomery Advertiser

4. In the five weeks remaining under the deadline, the U.S. and Iran can reach a historic accord on nuclear arms.

By Joe Cirincione in the Milwaukee Journal Sentinel

5. For the peaceful coexistence of bicycles and everyone else in a city, we can learn a lot from Copenhagen.

By Mikael Colville-Andersen in the Guardian

The Aspen Institute is an educational and policy studies organization based in Washington, D.C.

Contact us at editors@time.com.