Great American Biotic Interchange: When Two Continents Met
The land bridge allowed hundreds of species to spread between the Americas, reshaping the wildlife of both continents, especially South America.
Every Chronicle article on world history, newest first: battles, empires, disasters, discoveries and revolutions.
The land bridge allowed hundreds of species to spread between the Americas, reshaping the wildlife of both continents, especially South America.
One of the oldest well-preserved sequences of volcanic and sedimentary rock on Earth, central to debates over the earliest traces of life.
Boiler explosion and fire destroyed the steamboat, killing an estimated 1,100–1,200 or more of roughly 2,100–2,500 people aboard.
British defensive victory; the Luftwaffe failed to gain air superiority and the German invasion of Britain was postponed indefinitely.
The fortress surrendered to Russia on 22 March 1915 with around 117,000 men; it was retaken by the Central Powers on 3 June 1915.
Some 12,000-15,000 Boers settled beyond British rule, displacing African kingdoms and founding republics that became the Transvaal and the Orange Free State.
American victory; the British army and fleet withdrew after failing to break Baltimore's defences.
Faraday discovered electromagnetic induction and built the first electric generator, laying the scientific basis for dynamos, transformers and electric power.
Decisive French victory; Austria made peace at Pressburg and the Third Coalition collapsed.
Tikal defeated Calakmul, broke the Snake dynasty's dominance over the central Maya lowlands and began a century of renewed power and building.
Excavations revealed a large stone-built Muslim trading town, widely but not universally accepted as part of Ghana's capital.
Rashtrakuta victory; the Chola crown prince Rajaditya was killed and the Rashtrakutas occupied the northern Chola lands for about two decades.