NASA Measures Underground Water Flowing From Sierra to Central Valley

The Key to California’s Survival Is Hidden Underground

Warning: London Underground Polluted With Metallic Particles Small Enough To Enter Your Bloodstream

London Underground polluted with metallic particles small enough to enter human bloodstream

Homo naledi may have lit fires in underground caves at least 236,000 years ago

Space exploration goes underground

Geologic Activity Lets Microbes Mingle Deep Underground

Ancient underground water could unlock secrets of alien life | Space

Ancient underground water could unlock secrets of alien life

Are Trees Talking Underground? For Scientists, It’s in Dispute.

Magma on Mars may be bubbling underground right now

Bacteria could survive underground on Mars for hundreds of millions of years, new study finds

Study reveals soil moisture plays the biggest role in underground spread of natural gas leaking from pipelines

Better ventilation could be key for London Underground to manage air quality, finds new study

An Underground Ocean? Scientists Discover Water Deep Within Earth

Geothermal May Beat Batteries for Energy Storage. Energy generated by solar, wind, etc, can be stored underground as hot water and used later to generate electricity.

Underground microbes may have swarmed ancient Mars, new study suggests

How Far Would You Have to Tunnel Underground to Lose 20 Pounds?

Underground Liquid Water Detected on Mars? Maybe not

Underground Liquid Water Detected on Mars? Maybe not