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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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Guest opinion

Cunningham: Planning for heat emergencies

What happens in Tucson during a heat emergency? Temperatures soar, our electrical grid breaks down due to both weather conditions and the fact that everyone has got their air conditioners on full blast and boom…the power goes out, and goes out for a while.... Read more»

Tucson, other Az cities buck Trump, pledge to stick to Paris climate goals

Arizona cities this week spurned President Trump’s plan to pull the U.S. out of a global emissions compact, with at least three mayors — including Tucson's Jonathan Rothschild — pledging their cities would hew to the emission goals laid out in the Paris accord.... Read more»

FactChecking Trump's claims in climate speech

In announcing that the U.S. would withdraw from the Paris Agreement, a global accord aimed at addressing climate change, President Donald Trump made more than a few false and misleading claims.... Read more»

Trump plan to exit Paris accord riles Arizona Democrats, warms GOP

President Trump said Thursday the U.S. will withdraw from a global agreement on emissions that “handicaps” the economy, a move that Arizona critics charged will end up harming both the economy and the environment.... Read more»

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»

What the Devil won't tell you

A note to UA's new president: In my day, we didn't have 'safe places'

A kind of zero-option, zero-sum liberalism seemed to permeate the impending UA president's on-campus Q&A. Rather than saying "yes" to everything, I wish Robbins had said “prepare to be unsafe.” He would have done better to remind students that for centuries the most dangerous thing you can provide someone is an education. That's why authoritarians frown on it.... Read more»7

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»

What the Devil won't tell you

Solutions to 'fake news' could easily be worse than the problem

Efforts to fix what people are sharing will only sow resentment and recriminations about the Lame Stream Something or Other and drive more people away from fact-based reporting and to hypothesis-spreading articles.... Read more»

The facts on Trump’s EPA nominee

Scott Pruitt, President-elect Donald Trump’s nominee to head the U.S. Environmental Protection Agency, has made some questionable claims related to global warming, fracking and the Clean Power Plan.... 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»

FactChecking the 12th GOP debate

The candidates’ factual stumbles touched on ISIS, ethanol, climate change and more. ... 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»

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