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Tucson, Phoenix get middling scores in UN look at cities’ sustainability

A study scored the 100 most-populous U.S. cities on the Sustainability Development Goals set by the U.N. Those include criteria such as poverty levels, water scarcity, climate action and economic growth.... Read more»

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Trump’s Defense secretary cites climate change as national security challenge

Secretary of Defense James Mattis has asserted that climate change is real, and a threat to American interests abroad and the Pentagon’s assets everywhere, a position that appears at odds with the views of the president who appointed him and many in the administration in which he serves.... Read more»

Report: Climate change a growing factor in lessening Colorado River flows

There are many factors behind declining Colorado River flows, but climate change plays a larger part than previously thought and the threat will continue to grow if global warming is not addressed, a recent report says.... Read more»

As climate heats up, state confident in water conservation efforts

Parts of Arizona could experience as many as 140 days of temperatures above 100 degrees per year within 20 years, according to a climate change model from the EPA. Despite that, state agencies say they are confident that the state has been careful in its water use, and communities and water utilities have developed responses to changing climates for years.... Read more»

UA study: North American forests won't nip climate change in the bud

New research from the University of Arizona is challenging conventional wisdom about forests and climate change: forests in North America are predicted to be harmed by warming climates, despite earlier predictions that longer growing seasons would mean healthier trees.... Read more»

Global warming, pesticides killing off monarch butterflies

Global warming and pesticide use are disrupting the monarch’s migration patterns through Arizona and destroying milkweeds, the food source for its young. The number of migrating monarchs has dropped by as much as 90 percent in two decades. Should they be declared an endangered species?... Read more»

Factchecking the White House on climate, heat deaths

In a recent “fact sheet” on the threat climate change poses to human health, the White House cherry-picked data on the estimated number of premature deaths due to future extreme temperatures.... Read more»

Dry is the new normal: Southwest has gotten more prone to droughts

During the last 35 years, weather systems that bring precipitation in the Southwest formed less and less often, indicating a drift into a drier climate state. Today, in other words, droughts can form more easily, last longer, and be more intense than a few decades ago.... Read more»

Artificial trees: How ASU scientists are hoping to reverse global warming

Scientists at ASU are developing new technology capable of capturing excess carbon dioxide from the atmosphere, a task they believe is paramount to current efforts to reduce emissions.... Read more»

Palin off on glaciers and global warming

Sarah Palin says man isn’t to blame for climate change, citing the fact that some glaciers in Alaska are expanding. But an individual glacier’s growth does not disprove the existence or causes of global warming. In fact, the vast majority of glaciers in Alaska and around the world are losing ice rapidly.... Read more»

Factchecking Jeb Bush on climate change

Jeb Bush claimed that the science is unclear as to how much humans contribute to global warming. ... Read more»

The extreme weather-climate change connection

Rep. Lamar Smith, R-Texas, made several incorrect claims in a Wall Street Journal opinion piece regarding connections between climate change and severe weather.... Read more»

FactCheck: Obama and the ‘warmest year on record’

President Barack Obama says that 2014 was “the planet’s warmest year on record.” But that’s not entirely accurate.... Read more»

Former Irish president to speak on climate change at UA

A former president of Ireland, Mary Robinson, will give a speech on climate change and human rights at the University of Arizona on Thursday night. Robinson, a former United Nations envoy on the issue, will "discuss the importance of including the most vulnerable populations of the world in solutions to climate change."... Read more»

Factcheck: Nothing false about temperature data

Rep. Gary Palmer falsely claimed on a radio show that temperature data used to measure global climate change have been “falsified” and manipulated.... Read more»

Meet 3 people who need a climate change solution right now

At this month's UN 'COP20' conference in Lima, here's what citizens from the front lines of the global climate crisis had to say.... Read more»

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