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DTSTART:20260826T213000Z
DTEND:20260826T223000Z
DTSTAMP:20260826T000000Z
SUMMARY:Earth's Mass Extinctions: Science Lecture with Dr. Mike Coffin
DESCRIPTION:Earth has experienced five mass extinctions over its ~4.5 
 billion year history\, with proposed causes ranging from extraterrestrial 
 bolide impacts to massive flood volcanism. The fleeting time when human 
 activities have significantly impacted the Earth system shows similarities 
 with past episodes of mass extinctions. Current extinction rates are high\, 
 global environments are changing\, the ocean is becoming more acidic and 
 perhaps less oxygenated\, and chemical pollution is widespread. Evidence 
 suggests that a mass extinction\, defined when Earth loses more than 75% of 
 its total estimated species in a geologically short interval\, may now be 
 underway\, driven by Homo sapiens.\n\n---\n\nMarine geophysicist Mike 
 Coffin investigates interactions between the oceanic environment and the 
 solid Earth. After growing up in Bangor\, he was educated at Dartmouth 
 College (AB) and Columbia University (MA\, MPhil\, PhD). Ever since\, he 
 has pursued an international career that reflects the boundless nature of 
 the global ocean. He has worked in Australia (1985-1989\; 2011-present)\, 
 the US (1990-2001)\, Japan (2001-2007)\, and the UK (2008-2010). He has 
 also held visiting positions in the US (1982\, 2002\, 2016-present)\, 
 Norway (1992\, 1996)\, Australia (2000)\, and France (2001). Mike has led 
 or participated in 37 blue-water research expeditions totaling  more than 
 1\,000 days at sea\, focused mainly in the Southern\, Pacific\, and Indian 
 oceans.
LOCATION:Mellon Room\, Northeast Harbor Library\, 1 Joy Road\, Northeast Harbor
ORGANIZER;CN="Zach Taibi":MAILTO:ztaibi@nehlibrary.org
CATEGORIES:Public Event
CONTACT;CN="Zach Taibi":MAILTO:ztaibi@nehlibrary.org
STATUS:CONFIRMED
UID:LibCal-16634348
URL:https://nehlibrary.libcal.com/event/16634348
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