The rules relax initial tailpipe limits proposed last year but eventually get close to the strict standards set out by the Environmental Protection Agency.
More than 92% of the countries and regions analyzed exceeded guidelines for particulate pollution, according to a report from IQAir, a Swiss air quality-monitoring company.
Comet 12P/Pons-Brooks was nicknamed the “devil comet” because an eruption last year left it with two distinct trails of gas and ice in the shape of devil horns.
The consequences of climate change are already taking a toll on some U.S. communities. In Cameron, Louisiana, hope comes from a natural gas plant that activists call a "carbon bomb."
Jane Gilbert is working to figure out how one of the hottest cities in the U.S. can protect its most vulnerable denizens while navigating Florida politics.
In the rocket’s third and most ambitious test flight yet, it achieved two milestones: Starship successfully reached orbit and re-entered Earth’s atmosphere for the first time.
In a study of brain activity, walking a poodle made people more relaxed, brushing the dog improved concentration and playing with her had both effects.
The launch is scheduled for Thursday morning. The company hopes to test a variety of capabilities, including a controlled re-entry through Earth’s atmosphere.