Unsafe air, the coming water shortages in the US and other top stories of the week

91% of the world breathes unsafe air. These are the most polluted cities.
⇒ Explore: Cities and Urbanization

Sleep deep. A new study links poor sleep and Alzheimer’s.
⇒ Explore: Mental Health

Your smartphone is vulnerable. The latest trends in cybercrime.

A trade war is just the start. Another view of the top risks of 2019.

Climate change in the United States. Water shortages are coming.

To get to net-zero carbon emissions, we need to do better with concrete.

The secret about migration? It makes a big contribution to economic growth.

Enveloped in uncertainty. A new cold war could be just as hard and costly as the old one.

Hidden mechanisms. How work cultures favour the already affluent.

Status as a service. How people seek to maximize social capital.

Time to give democratic socialism a chance? A centrist economist hands over the baton.

What a vulnerable world. How our technological creativity threatens humanity.

Evaporating growth promises. References discussions at Davos. (Financial Times)

Forum opens applications for 100 Arab start-ups. (The National)

Time for sovereign wealth funds to tackle climate change. Cites Forum white paper. (CleanTechnica)

Empower teachers to close the US skills gap. Draws on data from Future of Jobs Report. (InformationWeek)

How the best roads in Africa are boosting Namibia. Cites Forum research. (Southern Times)