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Climate model projections clearly show that warming beyond 1.5 C will dramatically increase the risk of extreme weather events.

The world could still, theoretically, meet its goal of keeping global warming under 1.5 degrees Celsius, a level many scientists consider a dangerous threshold - but realistically, that’s unlikely to happen, due to problems evident at COP27, the United Nations climate conference in Egypt. Read more»

The Cholla Power Plant, near Joseph City, Ariz., in 2010.

Once in a decade, as stated by the Clean Air Act, each state is required to assess airshed pollution in national parks and wilderness areas. This regional haze planning process is a rare and vital chance to clean up the air for Arizonans while lowering our state’s emissions that worsen climate change. — Catalina Ross, Sierra Club Read more»

Importantly for wealthy countries, the text avoids terms like 'liability' and 'compensation.' Those had been red lines for the United States.

Developing nations were jubilant at the close of COP27 as negotiators from wealthy countries worldwide agreed to establish a “loss and damage” fund for vulnerable countries harmed by climate change - but the fund might not materialize in the way that developing countries hope. Read more»

As world leaders gather in Sharm el-Sheikh, Egypt, to discuss global climate policy at the 27th annual UN climate conference, Arizona leaders are working on the implementation of climate policy across the state.

Stark words greeted the leaders who have gathered in Egypt to discuss climate change at the United Nation’s annual conference - words that resonate with climate experts and some political leaders in Arizona, who are taking their own steps in the absence of a statewide policy. Read more»

The last climate conference, COP26 in Glasgow, nearly fell apart over frustration that international finance wasn’t flowing to developing countries and that corporations and financial institutions were greenwashing – making claims they couldn’t back up.

Despite frustrating sclerosis in the negotiating halls as countries meet at COP27, the United Nations summit on climate change, the pathway forward for ramping up climate finance to help low-income countries adapt to climate change and transition to clean energy is becoming clearer. Read more»

The United States Council for International Business pushed back against any suggestion that there should be limits on corporate interests at the climate talks.

There are more than 600 fossil fuel lobbyists at the COP27 climate conference, a rise of more than 25% from last year and outnumbering any one frontline community affected by the climate crisis. Read more»

A series of symbolic moves on climate finance at COP27 suggests positive momentum could be starting to build on a pivotal issue at the UN summit in Egypt. Read more»

Engel on the evening of the August primary election.

"I’m voting for Kirsten Engel in Arizona’s 6th Congressional District to ensure that a vibrant Arizona is ready to face the challenges and opportunities that lie ahead." — Rita Ranch resident Albert Lucero Read more»

Kathy Balman, founder and director of Educating Children Outdoors, demonstrates how to tie a tourniquet in case of an emergency in a survival class at Marana Heritage River Park on Oct. 1, 2022. Using a piece of cloth, tie a knot around the wounded limb, get a stick and tie another knot on top of it to secure it to the cloth. Then, twist the stick to slow the bleeding.

The Maricopa County Department of Health’s annual report on heat deaths, which was released this month, reports a record 339 heat-associated deaths in 2021, and of those, 75% took place outdoors, and 19% of those happened on hiking trails or in desert areas of the county. Read more»

U.S. President Joe Biden speaks during his State of the Union address on March 1, 2022.

President Joe Biden at a community center in Portland Saturday promoted Democrats’ efforts to bring down health care costs, in a visit to a normally Democratic state three weeks before midterm elections that will determine control of Congress for the next two years. Read more»

Democrat Raúl Grijalva.

Democrat Raúl Grijalva is running for the 11th time to represent southern Arizona in Congress – and though this time it’s in a new district, Grijalva plans on maintaining consistency in his "progressive and commonsense politics.” Read more»

Libertarian Marc Victor.

Libertarian Marc Victor - who calls himself a “live and let live guy” - says he’s running for the U.S. Senate because he wants to change the world, starting with Arizona and is campaigning on what he calls “a new approach to politics.” Read more»

Strong Arm, a well-known saguaro cactus in the Tortolita Preserve near Marana, was estimated to be 150 to 200 years old and 40 feet tall when it toppled during an August storm. But the actual cause of death was Erwinia cacticida, a bacteria that causes saguaros to rot and ooze a thick, black liquid.

For close to two centuries, Strong Arm – a symbol of the Sonoran Desert - stood over the Tortolita Preserve near Marana, but a monsoon storm in August toppled the giant saguaro, revealing it fell prey to a deadly bacteria that scientists believe is more prevalent than ever. Read more»

Growing up is Tucson's alternative for growing out. What's been done Downtown, as with this project near West Broadway and South Church Street, should spread throughout the urban center.

Nothing sounds sexier than a "Downtown infill overlay zone" but Tucson has used this land-use tool to help resurrect our city core. Expanding it could help heal much of what ails Tucson. Read more»

Many cities are homing in on urban heat islands to better understand the history and historic discrimination that has led to dramatically higher temperatures from neighborhood to neighborhood — and to tailor solutions to local realities.

Extreme heat kills more people each year than any other type of weather-related event, and those risks can be amplified in “heat islands” - predominantly located in low-income neighborhoods - and now, the federal government and some cities have begun to act. Read more»

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