Sustainability

Hot planet: January 2020 was warmest January in 141 years of records, NOAA says

PHOENIX – January 2020 was the warmest January recorded across the world. But what does that mean for Arizona?


Blasting sacred sites for border wall ‘forever damaged’ tribes

WASHINGTON - An emotional Tohono O'odham Nation chairman told lawmakers Wednesday that blasting on sacred sites in national monuments to build a border wall near his reservation has "forever damaged our people."


UNESCO urged to protect World Heritage Site threatened by border wall construction

HERMOSILLO, Mexico – The Trump administration’s border wall construction is threatening El Pinacate and Gran Desierto de Altar Biosphere Reserve, a UNESCO World Heritage Site, according to a petition by conservationists and the Tohono O’odham Tribe.


Why Palo Verde, the country’s largest nuclear plant, is cutting its wastewater use

PHOENIX – Palo Verde Nuclear Generating Station west of Phoenix is trying to reduce its use of wastewater in the nuclear cooling process by using even dirtier water.


Endangered species throw roadblock in path of Rosemont Copper mine

WASHINGTON - A federal judge has overturned environmental permits for the proposed Rosemont Copper Mine, saying the U.S. Fish and Wildlife Service failed to consider the mine's impact on several endangered species in the Santa Rita Mountains.


To salvage recycling, Phoenix increases solid waste residential rate by 24%

PHOENIX – Residents will see their recycling and composting rates go up over the next two years. The rate increase comes after two years of China cutting back on what types of recycling it will accept, meaning less revenue to offset the city’s recycling program.


‘Perfect droughts’ were common in the past, researchers say, and could get worse

PHOENIX – “Perfect droughts,” when diminished streamflow and precipitation affect all of a region’s water sources, occurred in California an average of six times a century for the past 600 years, University of Arizona tree-ring experts say, and they could become longer and more common in the future, irrespective of climate change.


Four Corners drought in 2018 was worsened by human-caused climate change, researchers say

PHOENIX – New research says human-induced climate change played a big role in the Four Corners drought of 2017 and 2018, which caused $3 billion in losses and prompted an emergency drought declaration on the Navajo Nation Reservation.


Scientists hope to win global competition with concrete that incorporates and reduces carbon dioxide emissions

PHOENIX – A UCLA team is developing a concrete that aims to reduce carbon emissions from ordinary concrete production.