Engineering

Concrete versus asphalt for Nigeria's roads: which is better?

Nigeria's new works minister, David Umahi, is pushing for the use of rigid pavement in road construction, as against the flexible pavement predominantly in use. This, as the minister noted, is due to the precarious state ...

Energy & Green Tech

Future car travel may be cheaper, but also more expensive

Many of the cars currently speeding through the summer landscape are running on electricity. At the same time, fuel taxes are an important source of income for the government. So where will the money come from in the future ...

Security

How an 'AI-tocracy' emerges

Many scholars, analysts, and other observers have suggested that resistance to innovation is an Achilles' heel of authoritarian regimes. Such governments can fail to keep up with technological changes that help their opponents; ...

Business

How ridesourcing services are transforming US cities

Over the last decade, the meteoric rise of ridesourcing services like Uber and Lyft have transformed the urban landscape, affecting travel patterns, car ownership, and congestion, and more broadly, the economy, the environment, ...

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