water

Life on Mars. August 6, 1996.

In August 6, 1996 a team of researchers announced that the meteorite ALH84001, discovered in the Allan Hills of Antarctica, may contain evidence of life on Mars, but further tests were inconclusive. To date, no proof has been found of past or present life on Mars. Cumulative evidence shows that during the ancient Noachian time period, the surface environment of Mars had liquid water and may have been habitable for microorganisms. The existence of habitable conditions does not necessarily indicate the presence of life. Scientific searches for evidence of life began in the 19th century, and continue today via telescopic investigations and deployed probes. While early work focused on phenomenology and bordered on fantasy, the modern scientific inquiry has emphasized the search for water, chem...

Aqua Traiana. Fresh water to a new Rome. June 24, 109 AD.

On June 24, 109, Emperor Trajan opened the Aqua Traiana aqueduct, channelling fresh spring water from sources around Lake Bracciano to Rome, the bustling capital of his empire. The vast structure traversed the countryside to the Janiculum Hill, where it was used as bathing and drinking water for the locals, and also to power a series of water mills for industrial purposes like processing grain and sawing stone. The springs around Lake Bracciano, about 25 miles northwest of Rome, were an important water source for the Ancient Etruscans. Around the year 100, Trajan started the construction of a nymphaeum at the site—a monument consecrated to the nymphs, young water goddesses—as well as the Aqua Traiana, which has survived up to the present day. Trajan recorded many of his achievements in ima...

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