Rational number, in arithmetic, a number that can be represented as the quotient p/q of two integers such that q ≠ 0. In addition to all the fractions, the set of rational nu...

The explorer Christopher Columbus made four trips across the Atlantic Ocean from Spain: in 1492, 1493, 1498 and 1502. He was determined to find a direct water route west from Eu...

Portuguese explorer Vasco de Gama becomes the first European to reach India via the Atlantic Ocean when he arrives at Calicut on the Malabar Coast. Da Gama sailed from Lisbon, P...

Brazil was officially "discovered" in 1500, when a fleet commanded by Portuguese diplomat Pedro Álvares Cabral, on its way to India, landed in Porto Seguro, between Salva...

While Indigenous Australians have inhabited the continent for tens of thousands of years, and traded with nearby islanders, the first documented landing on Australia by a Europe...

The race to find Antarctica sparked competition to locate the South Pole—and stoked another rivalry. Norwegian explorer Roald Amundsen found it on December 14, 1911. Just...

The dutch explorer Abel Tasman is officially recognised as the first European to 'discover' New Zealand in 1642. His men were the first Europeans to have a confirmed encounter w...

The first documented Europeans to arrive in Tibet were a pair of Portuguese Jesuit missionaries, António de Andrade and Manuel Marques in July or August, 1624.

The caves at Ajanta date from the 2nd century B.C.E. to 650 C.E and were cut into the mountainside in two distinct phases. Discovered by chance in 1819 by British soldiers on a...