Policy

The president of the Chicago Teachers Union explains how climate change became a pillar of the union’s contract demands

Portland, Ore., Seattle, San Francisco and Los Angeles have all explored charging car commuters to fund public transportation and reduce traffic

World leaders must make plans to remove more carbon dioxide from the atmosphere, a new report says

This week U.N. Secretary-General António Guterres called for bans on fossil fuel ads, but legal challenges would make nationwide restrictions difficult to implement in the U.S.

Regulating chemicals one-by-one has allowed the tobacco industry to skirt menthol bans by creating new additives with similar effects but unclear safety profiles

NASA’s head of heliophysics explains how we weathered the worst solar storm of a generation—and discusses the challenges we face in preparing for the next one

The CPORT algorithm, commonly used to estimate the risk that a child pornography offender will offend again, hasn’t been validated for use in the U.S.

Costs are skyrocketing to modernize the U.S. nuclear arsenal. Instead of turning a blind eye, Congress should demand fiscal oversight and make hard decisions balancing costs with deterrence

A decade after Congress told the FDA to expedite the approval of more effective sunscreens, the federal government still has not approved sunscreen ingredients that are safely being used around the world

People understand how saving tropical forests is good for the planet, but temperate forests are equally indispensable in fighting climate change

The Biden administration is marking Earth Week with announcements of solar power funding for lower-income communities, an expansion of the Climate Corps and Clean Air Act rules

Mental health recommendations for pilots and air traffic controllers bring new ideas to old problems; the FAA must decide what’s next