The longest-running study of its kind reviewed death records in the path of pollution from coal-fired power plants. The numbers are staggering − but also falling fast as US coal plants close.

There’s recognition that AI needs to be used responsibly.

In the absence of comprehensive AI regulation from Congress, the executive branch is building on its previous efforts to address AI harms.

Governments have the ability to challenge misuse of the technology, but don’t have a great track record.

Two decades ago, the nanotechnology revolution avoided stumbling by bringing a wide range of people to the table to chart its development. The window is closing fast on AI following suit.

Drug regulation expert explains how the problem was discovered, next steps for FDA, and the questions it raises about other products, supplements.

Nanoparticles have contributed to profound medical advances like the COVID-19 vaccine, but without oversight, they pose ethical and environmental issues.

Industry leaders, scientists and policymakers may see AI’s technical potential, but societies have trouble adapting to revolutionary advances without broad public participation.

A pipeline that has carried Canadian oil and gas across Wisconsin and Michigan for 70 years has become a symbol of fossil fuel politics and a test of local regulatory power.

Cars are getting bigger on US roads, and that’s increasing pedestrian and cyclist deaths. A transport scholar identifies community-level strategies for making streets safer.