The Mediterranean Sea hosts a large share of marine species, but invasive tropical fish from the Red Sea are rapidly displacing native species, reshaping food chains and threatening fisheries.
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'Zero flow' recorded at key spot on Arizona's drying San Pedro River- Tony Davis
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The Charleston gauge, long considered a key indicator of the San Pedro River's health, dried up late last month for the first time in two decades.
News
- USA Today - Vertical
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Researchers used a drone with a petri dish attached to collect respiratory samples from dozens of endangered right whales.
- Henry Brean
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It could take 100 years and cost more than $24.5 million to save the Mount Graham red squirrel, according to a revised recovery plan for the endangered rodent.
- Sarah Henry Arizona Republic
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Habitat loss and predation by invasive species have depleted the gartersnake populations across Arizona and New Mexico.
- Henry Brean
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The endangered Sonoyta pupfish has apparently disappeared from its native range in Mexico, leaving just one remaining wild population at Quitobaquito Springs in southwestern Pima County.
- Henry Brean
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Video footage of jaguars in Southern Arizona is extremely rare, but the region's newest cat has shown up on camera multiple times lately.
- Rory Cunnington Arizona Sonoran News
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The Santa Cruz River is a sprawling watershed stretching through Southern Arizona from Marana to northern Mexico. And it’s being reshaped by i…
- Henry Brean
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For Star subscribers: As border wall construction accelerates, ecologists are cataloging wildlife on both sides of the international boundary and tracking the movements of rare species like jaguar and ocelot in Southern Arizona.
- Sarah Henry Arizona Republic
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Over a century of fire suppression, coupled with climate change, has turned wildfires bigger and hungrier.
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Suspect named in killing of Tucson police recruit Carlos Ramirez, 2 others also sought
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Cyclist rescued after being knocked into rushing water at Sabino Canyon
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Tucson police recruit shot and killed at home, fiancée wounded
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Police detail crash that severely injured Marana High football player
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Motiejus Krivas limited with foot issue in Wildcats' 99-88 loss to Lithuania's 'B' team