The Life and Death of One of America's Most Mysterious Trees

A symbol of life, an ancient sundial or just firewood? Tree-ring scientists trace the origin of a tree log unearthed almost a century ago.

Tree Story': What Tree Rings Can Tell Us About The History Of The World

Trees have stories to tell. We all learn when we’re kids that reading tree rings shows us how old a tree is. But expert Valerie Trouet says they can tell us so much more than that.

Home Grown: How drying vegetables cuts down on food waste

One of the oldest domestic arts, dehydrating foods at home provides an easy, economical way to save surplus food for a later time and in turn, decrease agriculture waste. 

2020 NCERA-101 Annual Meeting

The University of Arizona Controlled Environment Agriculture Center is pleased to invite you to attend the 2020 International Meeting of the NCERA 101 Committee on Controlled Environment Technology & Use, as well as join The Controlled Environment Agriculture Center in commemorating 20 successful and productive years as we celebrate the Center’s 20th Anniversary.

Biosphere 2 closes to public due to the pandemic

Biosphere 2, a major tourism attraction north of Tucson near Oracle, suspended all public activities effective Friday, March 13, at 4 p.m., for an undetermined period of time.

Bill to end “use it or lose it” water policy sailing through Legislature

A bill to remove an outdated “use it or lose it” policy in state water law is sailing through both houses at the Legislature, a sign that progress is inching forward as Arizona prepares for a drier future. 

Bridging the Food-or-Energy Gap

Should land be used for solar panels or agriculture? The burgeoning Solar Sheep movement argues: Why not both?

Pima County concerned about exceeding ozone limits

One more tick and Pima County could face federal compliance issues which could be costly to county business but more importantly, for people’s health.

Birds, dragonflies other wildlife flocked to a wetter Santa Cruz River

Dragonflies, toads, roadrunners, snakes and kingfishers all found a home at the Santa Cruz River downtown while Tucson Water was releasing large amounts of water into that stretch.

The Mediterranean nearly dried up. A cataclysmic flood revived it.

New Evidence reignites a longstanding debate about how the sea reconnected with the ocean.