A 60 Minutes report on groundwater depletion brought attention to a critical issue that many regard as a national security threat, but failed to mention the inherent connection between water scarcity and climate change.

The November 16 edition of 60 Minutes featured a segment on the threat of groundwater scarcity titled “Depleting the Water.” In it, host Leslie Stahl covered the severe droughts around the world that are leading people to extract fresh water from the ground at unsustainable rates, warning that “the wars of the 21st century may well be fought over water.”

But Stahl completely ignored climate change, which is projected to increase the severity and frequency of such droughts and is inherently linked to groundwater scarcity. A United Nations climate science report concluded earlier this year that manmade climate change will reduce groundwater resources “significantly in most dry subtropical regions,” and a 2013 study from Simon Fraser University determined that climate change may already be exacerbating water shortages in many areas around the globe.

The 60 Minutes segment highlighted that California's “record-breaking drought” is inducing farmers to drill for water in underwater aquifers at unsustainable rates -- without mentioning that this drought that has been directly linked by scientists multiple times to manmade climate change. Stahl also highlighted severe droughts across southern Asia and in the Middle East, regions that the National Center for Atmospheric Research and other scientific institutions have projected will experience worsening droughts as the planet warms.

Stahl's comment that groundwater shortages may lead to political unrest also has roots in global warming. As Stahl pointed out, many aquifers that are being severely depleted are in “volatile regions” such as in Iraq and Syria. Many military officials have warned that unabated global warming could exacerbate wars and terrorism and pose a national security threat.

The segment ended by asserting that if no action is taken, California's aquifers could end up completely depleted. But the only responses to the drought that the news magazine covered were a process in which sewage water is recycled into freshwater and a recently enacted law that regulates groundwater. 60 Minutes didn't discuss ways to combat climate change, which would work to prevent catastrophic droughts from happening in the first place.

60 Minutes' failure to mention global warming -- in a segment focused on a problem related to manmade climate change -- follows the news magazine's widely panned report on clean energy, which also made no mention of climate change.