What Happened to Mars's Water? It is Still Trapped There

Analyzing Mars's atmosphere and rock record, scientists from Caltech and JPL find that an ocean's worth of water was sequestered in the crust of Mars billions of years ago.

Mars Terraforming Not Possible Using Present-Day Technology – NASA

How the UAE got a spacecraft to Mars – on the first try

What Happened to Mars' Ocean? It's Still Trapped There

Is an Ocean of Mars Water Trapped in the Planet's Crust? - Sky

How did Mars lose its habitable climate? The answer is blowing in

What happened to Mars's water? Is it still trapped there? - Quora

What Happened to Mars's Water? It is Still Trapped There - www

Life on Mars LearnEnglish

Where did Mars' water go? Maybe into the planet's interior

Mars: Vast amount of water may be locked up on planet - BBC News

Podcast: Where did Mars's water go?

Mars might be hiding most of its old water underground, scientists

Our Planet's Leaky Atmosphere

Where did Mars's liquid water go? A new theory holds fresh clues.