With its average winter temperature of minus 50°C—having reached a record low of minus 89.6°C at the Russian Vostok station on July 21, 1983—Antarctica stands as a unique research laboratory. Its population density is just one inhabitant per 13,000 km² during the long austral night and ‘only’ one per 1,700 km² in summer. Its mountains rise up to 5,400 meters. Here, scientists analyze the planet’s health, reconstruct its history, and develop ideas for its future.
The term Antarctica originated in the 6th century BC with the ancient Greeks. Antarktikos denoted the hemisphere opposite the one with the constellation Ursa Minor (the Little Bear), or Arktikos. From Pythagoras to Aristotle, philosophers envisioned a spherical Earth.
In the 2nd century AD, astronomer and geographer Claudius Ptolemy revisited Greek theories, believing a southern continent must exist to balance the land masses of the north. Yet for centuries the existence of a southern land was merely legend. The earliest known map depicting Antarctica’s coastline dates to 1513, when Turkish admiral Piri Reis published a chart of the Atlantic featuring an unknown coast south of Tierra del Fuego, strikingly similar to pre-glaciation Antarctica. In 1569, Flemish cartographer Gerhard Kremer (known as Gerardus Mercator) depicted a massive, imaginary southern continent—Terra Australis Incognita—on his world map. The first navigator to cross the roaring forties and screaming fifties was James Cook, who breached the Antarctic Circle in 1773.
The first true sighting, however, was on January 27, 1820, by an expedition led by Estonian Fabian Gottlieb von Bellingshausen aboard Vostok, who came within twenty miles of the Antarctic coast. American captain John Davis made the first landing on the continent on February 7, 1821. Many expeditions followed—some ending in triumph, others in tragedy—all contributing to the unveiling of the planet’s last unknown frontier.
The South Pole
The South Pole is more than a witness to Earth’s geological evolution: it is a vital observatory, closely monitoring global pollution. From this privileged vantage, a vast network of sensors—manual and automated—keeps track of the ozone hole and greenhouse effect. Scientists also conduct cosmological research, studying ionized hydrogen particles from the sun, which interact with Earth’s magnetic field to produce magnetic storms. They make astronomical observations in millimetric and infrared bands, capturing cosmic background radiation—the residual energy from the Big Bang—to unlock the mysteries of galaxy formation and the universe’s earliest moments.
The Antarctic Treaty
Legally, the White Continent is governed by the Antarctic Treaty: an international neutrality agreement suspending all territorial claims south of the 60th parallel, banning any military or nuclear activity, fostering global scientific cooperation, and ensuring conservation of flora and fauna. Signed in Washington on December 1, 1959 by twelve of the forty countries participating in the 1957-58 International Geophysical Year, it came into force in 1961.
This landmark document gave the South Pole a legal status and “internationalized” the continent, effectively freezing disputes among states vying for sovereignty. However, it made no mention of resource exploitation, fixed its validity for thirty years, and allowed any of the signatory countries to renegotiate terms upon expiry—a flexibility likely prompted by growing rumors of hydrocarbon deposits beneath the Weddell and Ross Seas.
The rumors were true: in 1973, New Zealand, Japan, and the United States, through a drilling project in the Ross Sea area, discovered oil reserves of 40 billion barrels under hundreds of meters of ice—just as a global energy crisis loomed. This triggered a rush to join the group of treaty nations to secure future exploitation rights and fishing access to the continent’s krill-rich waters. Krill, a tiny and vital crustacean for both the Antarctic food chain and the agri-food industry, is coveted worldwide.
It’s also worth noting that Antarctica contains 91% of the planet’s ice and 68% of its freshwater reserves—a crucial resource as global water consumption grew sixfold from 1900 to 1995, pushing a third of the world’s population into water stress.
The Antarctic Treaty System
To prevent competing territorial and economic claims, the Antarctic Treaty System was established, adding the CCAS (Convention for the Conservation of Antarctic Seals, 1978) and the CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources, 1980) to the Washington Pact. Shortly after, the Wellington Convention made provisions for the exploitation of Antarctic mineral resources.
The Madrid Protocol
The Madrid Protocol, signed in 1991 and effective from January 14, 1998, banned all mining for the next 50 years and requires environmental impact assessments for any activity. It designates Antarctica as “a natural reserve devoted to peace and science.” To date, the treaty has been signed by 45 nations representing more than 80% of the world’s population.
The International Geophysical Year of 1957 had the same scientific drive as the first and second International Polar Years (1883, 1932–33): to discover Antarctica, its resources, and its secrets. The next International Polar Year will take place in 2007.
This monumental event brought together leading scientists to coordinate human and economic resources and study Earth’s magnetism and upper atmosphere. It saw the birth of SCAR (Scientific Committee on Antarctic Research), an entity dedicated to coordinating Antarctic research. This marked the start of systematic exploration and, with the launch of the first artificial satellite, the dawn of the space age.
About ten thousand participants from twelve nations established forty scientific stations across the Antarctic ice sheet—the largest such operation in exploration history.
Previously, only a handful of permanent bases, mostly run by Americans and Soviets, operated in Antarctica. The AGI programs kickstarted broader international cooperation and data sharing, leading to today’s 68 interdisciplinary scientific bases.
EPICA, the European Project for Ice Coring in Antarctica
Over the last forty years, researchers have amassed a vast body of data. A highlight is the EPICA (European Project for Ice Coring in Antarctica) program, involving ten nations in deep ice drilling at Dome C, near the Concordia station at 3,230 meters altitude and 1,000 km from the coast. Drilling began in 1996 and concluded December 21, 2004, yielding an ice core 3,270.2 meters deep and roughly 900,000 years old. These cores provide detailed, continuous climate information covering about ten to twelve glacial-interglacial cycles, each lasting roughly one hundred thousand years. This remarkable climate record forms as snow layers accumulate over millennia.
The trapped gases in the frozen snow have preserved atmospheric data from the time they were deposited. This enables scientists to reconstruct atmospheric composition, historic surface temperatures, and past climate changes—revealing the full impact of human pollution.
The ice core, over three kilometers long, is still being examined, but early analysis already brought important findings: in the shallowest layers—registering the last century—scientists observed a reduction in lead and chlorofluorocarbons (CFCs), known for damaging the ozone layer, but a rise in polycyclic aromatic hydrocarbons from unleaded gasoline and waste combustion.
Carbon dioxide, a major greenhouse gas, is now at its highest level for at least 440,000 years.
Other data from Dome C reveal how Earth’s temperature and the duration of warm and cold periods have been shaped by astronomical phenomena, like minuscule changes in Earth’s orbit or its axis of rotation, affecting how much solar energy reaches high latitudes. Research shows that temperatures comparable to today’s have only occurred during 5–10% of the timeframe studied and that the current interglacial warm period, which began 11,500 years ago, should last at least another 13,000 years—unless human activity alters the trend. For now, the doomsday scenario of a new ice age, as depicted in “The Day After Tomorrow,” appears remote. Nevertheless, experts recommend careful monitoring of human impacts on climate and the environment, assessing the changing climate system rationally and scientifically.
The Swiss Polar Research Commission (CSP)
The Swiss Polar Research Commission (CSP) joined the Epica project. At the 28th SCAR meeting held in Bremenhaven (October 3–9, 2004), CSP received international recognition for its achievements in Antarctica. The success of Swiss researchers at Dome C led Switzerland to become a full member of the Scientific Committee on Antarctic Research.
Until 140 million years ago, Antarctica was part of the Gondwana supercontinent with Africa, Arabia, India, Australia, New Zealand, and South America. Breaking apart at the end of the Jurassic, Antarctica finally separated from the other landmasses about 20 million years ago and drifted to the South Pole—a process theorized in the 1920s by Alfred Wegener but only scientifically confirmed in the 1950s with the mapping of ocean floors.
