EESA11 Lectures - EESA11 Lectures Lecture 1 Understanding Pollution Outline Humans are massively changing the Earth Why does pollution happen

EESA11 Lectures - EESA11 Lectures Lecture 1...

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EESA11 Lectures Lecture 1: Understanding Pollution Jan. 10, 19 Outline Humans are massively changing the Earth Why does pollution happen? Global pollution and global environmental health Root causes Our actions have consequences Humans are massively changing the Earth Between one-third and one-half of the land surface has been transformed by human action The carbon dioxide concentration in the atmosphere has increased by 30% since the beginning of the Industrial Revolution More than half of all accessible surface fresh water is put to use by humanity o Pollution of water More atmospheric nitrogen is now fixed by humanity than by all natural terrestrial sources combined o We make fertilizers from nitrogen o Which effects the earth later on About one-quarter of the bird species on Earth have been driven to Extinction
Biosphere 2: The experiment To test if and how people could live and work in a closed biosphere, while carrying out scientific experiments o Examined people’s social aspects and communication between them To explore the possible use of closed biospheres in space colonization There is forest, ocean, dessert.. etc inside Key Issues: 1. Oxygen levels began falling at a steady pace of 0.5% per month

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