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Two air-pollution hotspots in Portland have many residents worried about exposure to arsenic, cadmium, and now hexavalent chromium, which can be highly carcinogenic. Here's an update on what we know.

A Vermont company with operations in Utah says it can have electric air taxis ready for service in time for the 2034 Olympics in Salt Lake City. Pending federal regulations will be a big factor.

Ukraine is getting more military support from the United States.

FAA Administrator Bryan Bedford faces tough questions from lawmakers about the state of the nation's air traffic control system and its efforts to increase staffing.

The FAA is seeking proposals for projects that will include piloted and unmanned operations with a focus on electric air taxis, also called an electric vertical takeoff and landing aircraft.

Public health agencies are set up to regulate air pollution from cars, trucks and factories. Wildfire smoke presents a different set of threats, prompting some of those agencies to rethink priorities.

Nearly a year after launching an ambitious plan to rebuild the U.S.'s air traffic control infrastructure, leaders at the DOT gave an update, including details on a proposed AI-driven software system.

Wildfire smoke and unhealthy air persist and shift direction, as Trump demands explanation from Canada.

FAA Administrator Michael Huerta tells a House panel that some vulnerabilities reported in a congressional study have been fixed, and the agency is working on others.

The new Middle East broadcaster, Al-Arab, went on air Sunday. But it was shut down before dawn on Monday, apparently for airing an interview with an opponent of Bahrain's monarchy.