Dork Sahagian is an Armenian American

climate scientist Climatology (from Greek , ''klima'', "place, zone"; and , ''-logia'') or climate science is the scientific study of Earth's climate, typically defined as weather conditions averaged over a period of at least 30 years. This modern field of study ...

. He is the Director of the Environmental Initiative at

Lehigh University Lehigh University (LU) is a private research university in Bethlehem, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. The university was established in 1865 by businessman Asa Packer and was originally affiliated with the Epi ...

Bethlehem, Pennsylvania Bethlehem is a city in Northampton and Lehigh Counties in the Lehigh Valley region of eastern Pennsylvania, United States. As of the 2020 census, Bethlehem had a total population of 75,781. Of this, 55,639 were in Northampton County and 19, ...

. He invented a technique for calculating the Earth's air pressure in the past, based on the difference in the size of the bubbles in cooled volcanic lava.

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{{DEFAULTSORT:Sahagian, Dork American people of Armenian descent Living people Year of birth missing (living people) Place of birth missing (living people) American climatologists People from Bethlehem, Pennsylvania