March 28, 2024 10:34 AM
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Wildfire burning near Biosphere 2 science facility in southern Arizona 50% contained – Associated Press

Photo: The fire are and the Biosphere 2 facility (photo courtesy the Arizona Department of Forestry and Fire Management)

A wildfire in southern Arizona that’s burning about a half-mile (0.80 kilometer) from the Biosphere 2 science facility has been 50% contained, firefighters on Sunday said.

The wildfire broke out Sunday morning northwest of Oracle Junction and north of metro Tucson, Arizona State Forestry officials said.

The fire’s cause wasn’t immediately known and had spread to about 13 acres (5.2 hectares) by Sunday afternoon before being partially contained.

Crews from the State Forestry, Golder Ranch Fire District and Northwest Fire District worked to keep the wildfire from reaching the Biosphere facility.

State Forestry launched single-engine air tankers to assist with suppression.

No evacuations have been ordered at this time, according to authorities.

Biosphere 2 was built between 1987 and 1991 as a way to test the viability of closed ecological systems and human life in outer space. The tests were held twice in the early 1990s.

The facility is owned and operated by the University of Arizona in Tucson.

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