President Joe Biden, Mexican President Andrés Manuel López Obrador and Canadian Prime Minister Justin Trudeau are meeting for a series of talks on migration, trade and climate change on Tuesday as the three leaders try to mend tensions that have divided the continent.

Sales of marijuana in Arizona soared to $1.6 billion in 2021, just one year after recreational cannabis was legalized in the state, making Arizona second only to California for retail sales that year, according to an industry research group. 

A new research program combining the efforts of Northern Arizona University and the University of Washington aims to create a vaccine for Valley fever, an infectious fungal disease that poses an increasing threat as the climate continues to warm and become drier. 

To address the growing need for a continually diversified and modern workforce, the New Economy Initiative was signed into law, providing millions of dollars in state funding through the Arizona Board of Regents to invest in Arizona’s economic future. This initiative aims to create 40,000 new jobs by 2041, increase economic output to $6.9 billion by 2023, and double the state’s investment in return, much of which can and should be generated within the space ecosystem.

President Biden and the Democrats have a problem. For the second time in six years, a Democratic president has negotiated an international agreement that will never be presented to the U.S. Senate for consent and will never be voted on ...

Phoenix Mayor Greg Stanton signed onto a statement in response to President Donald Trump’s decision to withdraw from the Paris Climate Accord, emphasizing his commitment to meeting the goals set in the international agreement through sustainability initiatives in Phoenix.

If generally accepted predictions of global warming come to pass, Arizona’s transportation system will have to adapt due to stronger dust storms, snowfall, flooding, forest fires and other factors, experts say.

WASHINGTON – Arizona is the 12th-most energy-efficient state in the nation this year, the same position the state held last year, according to rankings released Wednesday by the American Council for an Energy-Efficient Economy.

WASHINGTON – For every dollar the government spends preventing wildfire damage, it could save cash-strapped agencies like the Forest Service another $5 on fighting increasingly large fires, a Senate committee was told Tuesday.

State climatologist takes conciliatory stance on global warming

At a rally to raise awareness of climate change, Nancy Selover demonstrated the delicate balance she has to strike as both a political appointee and a scientist.