A. E. Douglass
American astronomer known for dendrochronology
American astronomer known for dendrochronology
1962
64 years ago — 95 years old
Scientists & Innovators
United States
An astronomer contributed significantly to the understanding of climate dynamics through the study of tree rings, a field known as dendrochronology. Developed methods to accurately date wooden artifacts and understand historical climate variations, providing insights into past climates and their impact on human activities. Established the Laboratory of Tree-Ring Research at the University of Arizona, which advanced research in the field and trained numerous students. Engaged in astronomical research related to the timing of solar and lunar cycles as well.
Pioneered dendrochronology
Established Laboratory of Tree-Ring Research
Contributed to climate studies
A prominent figure in the field of evolutionary biology and ornithology, this individual contributed significantly to systematics and species concepts. Authored several influential works, including 'Systematics and the Origin of Species,' which shaped modern taxonomy. Served as a professor at Harvard University and engaged in extensive studies of tropical birds during field research in the Caribbean and South America. Played a vital role in enhancing the understanding of speciation processes.
Continue ReadingRussian ice hockey player played as a forward. Successful career spanned the NHL and KHL. Initially selected 15th overall in the 2003 NHL Entry Draft by the Nashville Predators. Achieved notable success in the KHL while playing for Ak Bars Kazan and CSKA Moscow, winning championships. Contributed to team dynamics with strong scoring and playmaking abilities.
Continue ReadingGrivas served as a key military figure in the Greek Cypriot struggle for union with Greece. He founded the paramilitary organization EOKA in 1955, which aimed to end British colonial rule in Cyprus and achieve enosis, or union with Greece. Grivas led EOKA during the armed struggle against British authorities, becoming a prominent nationalist figure. Following the 1960 independence of Cyprus, Grivas remained involved in political and military activities, focusing on the Greek Cypriot community. He returned to Cyprus in 1971 following years in exile, but his later years were marked by controversy regarding his political alignments. Grivas passed away in 1974 shortly before the invasion of Cyprus by Turkey.
Continue ReadingA professional footballer born in the Czech Republic, played primarily as a defender. His career included stints at several clubs, most notably with PSV Eindhoven and Newcastle United. Rozehnal was part of the national team that qualified for the UEFA European Championship in 2008. He also played for teams such as Lille OSC and 1. FC Slovácko, showcasing his skills in leagues across Europe.
Continue ReadingA canoe sprinter excelled in flatwater racing. Competed at the 2012 London Olympics, securing a gold medal in the K-1 200 meters event. Participated in multiple World Championships, consistently achieving podium finishes. Represented Ukraine in international competitions, contributing to the nation's prominence in canoe sprinting.
Continue ReadingA professional cyclist specializing in one-day races and classics. Competing primarily for UAE Team Emirates, achieved notable success in various prestigious cycling events. Won the Paris-Roubaix in 2014, marking a significant milestone in the career. Also secured victories in the Tour of Flanders and multiple stages in Grand Tours, showcasing proficiency in both sprinting and endurance events.
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