Over the last five years, researchers have found that the death rate for saguaros in the Phoenix area jumped from 1% to 2% ...

Arizona's saguaro cactus has evolved to thrive in the extreme climate of the Sonoran Desert, but after decades of rising heat, even these towering icons are showing signs of stress. Kris Van Cleave ...

Joaquín Murrieta-Saldívar, heading from Mexico to California in the early ’90s, handed his passport to the Border Patrol agent at the crossing station in Tijuana.

Maeveen Marie Behan was a renaissance woman whose drive to protect the Sonoran Desert was fed by love and a sense of justice. She was a lawyer who knew that the best way to reach people on a ...

Read science articles on the ice age, glaciation and climatology. Discover the connection between ice ages and global warming.

In a temperate climate, tree species diversity decreased with increasing elevation (Ohsawa, 1995) or exhibited a mid-elevation peak (i.e., hump-shaped pattern). While bacterial diversity exhibited no ...

News that’s not afraid of fun. Meet people at the centre of the day’s most hard-hitting, hilarious and heartbreaking stories — powerful leaders, proud eccentrics and ordinary people in ...