Wanderlust World Wanderlust World Antarctica holds ~70% of Earth's fresh water as ice (26.5 million km³). Every research station and field camp must produce liquid water from this resource. There are no liquid rivers or lakes accessible year-round (except subglacial lakes like Vostok, sealed for millions of years).
Large stations (McMurdo, Amundsen-Scott South Pole, Rothera, etc.) use waste heat from power generators (diesel, increasingly wind/solar) to melt snow/ice in high-capacity plants. McMurdo produces 200,000+ liters/day via reverse osmosis of seawater (desalination) supplemented by snow melt. South Pole melts snow from a "berm" using generator waste heat.
For field camps and traverses, the standard is melting snow on stoves (MSR WhisperLite, Primus, etc.) using white gas (naphtha) or kerosene. It is fuel-intensive: ~1 liter fuel → 3–4 liters water. Snow must be added gradually to a "seed" water to avoid scorching the pot. Never eat snow directly—it lowers core temperature and yields little water.
Passive solar stills (plastic sheet over a pit with container) work in 24-hour summer sun but yield little (0.5–1 L/day/m²). Used for survival or supplementing; not primary for operations. The prompt's description of solar stills as "most common" is incorrect for modern Antarctic operations—stove melting and waste-heat plants dominate.
Remote automated weather stations and some camps use wind turbines or solar panels to power electric immersion heaters in insulated melt tanks, reducing fuel flights.
Water in Antarctica = energy + ice. Large stations: waste-heat desalination/snow melt. Field: stove melting. Solar stills are a survival curiosity, not standard practice. Every drop is precious, tracked, and conserved.