Although there is a historical dispute about who arrived first in Antarctica, if the Spanish of the San Telmo or British seal hunters, the first records of human presence on the immense frozen continent date back to the summer of 1819. Since then interference has not stopped growing. A study now analyzes millions of records in logbooks, scientific bases or tourist statistics from these 200 years to estimate the percentage of Antarctic land with at least one footprint: barely a third of its 14.2 million square kilometers has been spared.
