Catégories : Tous - waste - infrastructure - plastics - pollution

par Simar Sabharwal Il y a 12 mois

66

The Anthropocene - The Human Epoch: Documentary Reflection

The documentary delves into the multifaceted impacts of urbanization, highlighting the significant transformations in land use and the extensive growth of cities. It discusses the challenges of accommodating increasing populations and the necessity for sustainable urban planning to mitigate habitat loss and biodiversity decline.

The Anthropocene - The Human Epoch: Documentary Reflection

The Anthropocene - The Human Epoch: Documentary Reflection

Consequences
Infrastructure changes

Informal settlements in urban expansion

Role of highways

Population challenges

Struggles in accommodating growing populations and the need for sustainable urban development

Urban Planning

Population Growth

Environmental changes

Seawalls

Habitat loss

Decline in biodiversity due to urban development and land reclamation

Urban sprawl
Land-use transformation
Large-scale growth
Movement of people
Involves the expansion of cities and suburbs into rural and natural lands
India's struggle with informal settlements
China's megacity growth
Los Angeles' historical development
Human Response and Activism
Urgent need for changes in industry practices and individual behaviors to combat climate change
Sixth mass extinction is attributed to human activity and pollution
The World Wildlife Fund reported a significant decline in population for half of all animal species since 1970
Climate Change Effects on Lagos, Nigeria
Wealth disparity and informal settlements increase vulnerability to flooding
The city's layout of islands and peninsulas exacerbates the impact of natural coastal processes
A high-risk city due to coastal erosion intensified by climate change
Underwater Impact
Coral Bleaching

Australia is a major coal exporter

Faces tensions between conservation and industry

In 2016, The Great Barrier Reef suffered a mass bleaching event

Lost around 22% of its corals

Linked to rising sea temperatures and increasing ocean acidity

Historical CO2 Levels and Warming Predictions
Estimated climate warming of 3.2 to 5.4°C above pre-industrial levels by 2100
In 2013, CO2 levels reached 400 ppm for the first time on record
Throughout much of Earth's history, CO2 levels ranged between 200 ppm and 280 ppm
Industrial Revolution and Carbon Emissions
Corporate Knowledge and Responsibility

Companies operating along coastlines are aware of the physical damage and pollution their activities cause

Major fossil fuel companies have known for decades that their products contribute to global warming

Emissions result from cement production and burning of fossil fuels
Release of over 390 billion tonnes of anthropogenic carbon emissions into the air

Until a more efficient energy source is found, global sustainability takes a back seat

Anthroturbation

Global Infrastructure and Engineering
Development

Quarries

Mines

Extensive tunnels

Anthropogenic transformation of landscapes
Impact on Urban Areas
Technological advancements leaving a definitive record of human presence

Indications of human influence on Earth's geology

Scarring the planet and transforming the underworld

Proof of human ability to change the Earth

Florida phosphate mining
Growing Underground in London
The Gotthard Base Tunnel
Berezniki's extensive underground tunnels

Sinkholes

Involves large-scale activities under the Earth by humans
Human activities transform both the Earth's surface and subsurface
Mining
Drilling
Human tunnelling

Technofossils

The technosphere is a significant component
Technofossils and the Technosphere

Physical components of human systems and technologies

Estimated weight of the technosphere

Resistance to decay

Anthropocene and the Technosphere

Contribution of human-made objects as indicators of a new epoch

Composed of human-made materials
Human-generated objects are technofossils

Global significance

Long-lasting impact

Rapid increase in production

Aluminum

Role as an indicator of human activity

Unique properties

Significance in future geological records

Coating the Earth

Extensive use

They serve as geological markers and indicators of human impact on the environment

Plastics in the Solid Waste Stream

Carbon Footprint Awareness
Understanding personal waste production and its impact on the biosphere
Decomposition of Plastic
Environmental dispersion of microplastics
Extended decomposition time
Waste Production and Recycling Rates
Canadians produce significant waste

Large portion ending up in landfills

Global Plastic Waste Management

Exporting plastic waste to other countries and its negative outcomes

Impact on waste management
Low recycling rates
High production
Environmental Impact of Landfills
Improper disposal of plastics can lead to environmental harm
Poses challenges in recycling
Environmental pollution
Contribution to greenhouse gas emissions
Methane gas release

Importing and Exporting Plastics

Consumer Education and Empowerment
Empowering individuals to make informed choices and reduce waste
The need for informed consumer choices and responsible waste management practices
Environmental Impact of Plastic Export
Negative outcomes in recipient countries
Lack of infrastructure
Pollution
Global Plastic Waste Trade
Capacity and Funding Challenges

Developing countries struggling to handle the waste from developed nations

Becoming a growing concern
Exporting plastic waste from developed to developing countries
Root Causes of Waste Production
Poor attitudes leading to excess waste
Treating other countries as dumping grounds
Lack of education
Misconceptions about recycling

Life Cycle of Plastics

Questions about the necessity of single-use plastic items
Growing concern and inquiries about plastic consumption and its impact
Waste Generation and Disposal
Recycling is not perfect

Recycled plastic loses quality and durability over successive cycles

Landfill issues
Environmental Impact of Production
Pollution from the production process
Greenhouse gas emissions
Resource Consumption
Inordinate amounts of natural resources required for plastic production
Cycle
Disposal
Consumer use
Distribution
Bottling processes
Creating polymers
Refining
Extracting natural gas
Extracting crude oil

Extinction

Ecosystem Loss and Smaller Species Decline
Habitat disruption due to human activities
Ecosystem loss affects various organisms, not just large mammals

Fish

Birds

Insects

Rapid Decline in Animal Species
Extinction of species

Northern White Rhinoceros

Near-extinction of diverse rhinoceros species due to human activities

Illegal poaching

Threats to elephants and rhinoceroses leading to population decline

Elephant Poaching

Illegal Ivory Trade

Significant decline in animal populations due to human activity
Mass Extinction in the Anthropocene
The Anthropocene is marked by a sixth mass extinction caused by human activities

Terraforming

Scientific Study of the Anthropocene
Human-induced changes in landscapes contribute to the Anthropocene epoch
Charting human influence on Earth through various markers

Importance of terraforming as a key marker

Global Impact of Terraforming
Importance of human-induced environmental change
Scale
Examples
Land scars from mining
Population growth impact

Rapid population growth in Nigeria

Creation of toxic garbage

Toxic garbage in the Dandora landfill

Tree cutting

Deforestation in British Columbia

Involves
Urbanization
Industrialization
Reshaping land for agriculture

Golden Spikes

Human Impact on Earth
Potential shift to the Anthropocene epoch
Human presence in the Holocene epoch
Scientific Decision-Making
Dominant signals and golden spikes
Ratification of time periods by academic committees
Epochs and Anthropocene Debate
Current debate on the beginning of a new epoch

Multiple potential golden spikes marking significant events

Identification of significant global events
Technofossils serve as markers of human influence on Earth
Concrete
Plastics
Geological time scale
Golden spikes indicate specific points

The Anthropocene epoch is debated due to multiple potential golden spikes

Marks significant events
Official timeline of Earth's history

Plastics and Society

Impact on Human and Animal Health
Implications on the environment
Implications of plastic waste on health
Overconsumption and limited recycling leading to a crisis
Crisis prompts efforts to reduce single-use plastics

Public Awareness and Activism

Shift in consumer and corporate behaviour towards sustainable practices

Government and Corporate Responses

Educational programs

Plastic-free materials

Sustainable alternatives

Initiatives to reduce single-use plastics

Restrictions

Bans

Public awareness and frustration drive a potential revolution against single-use plastics

Possibility of eliminating single-use plastics from daily lives

History of Plastic

Evolution of Production Techniques
Surged in the 1960s leading to environmental concerns and recycling initiatives

Innovation and Alternatives

Introduction of bioplastics as a sustainable alternative to traditional plastics

Environmental Activism

Campaigns against overconsumption and improper waste disposal

Lead to mass production and variety of plastics
Cultural and Societal Impact
Environmental consequences
Mass production
Integration of plastics into everyday life
Evolved from early semi-synthetic plastics to entirely synthetic ones
Polystyrene
Polyester
Nylon
Polyethylene
PVC
Cellophane
Bakelite

Plastic Waste Types and Recycling

Human Health Concerns
Potential exposure to toxic chemicals from non-recyclable plastics
Environmental Impact of Plastics
Slow decomposition of plastics

Recycling and disposal are essential due to this

Non-recyclable plastics contributing to environmental pollution

Leads to long-term impact

Waste Management and Recycling
Global Issue of Over-consumption

Increased production and disposal of non-recyclable plastics

Variation in plastic recycling practices in different communities

Mechanical reasons

Economic reasons

Plastics are derived from polymers sourced from natural materials
Salt
Cellulose
Natural gas
Coal
Crude oil
Different plastics are identified by resin identification codes
Resin ID codes range from 1 to 7

Bioaccumulation

Role of Transnational Corporations
Over-consumption

Excessive production of plastics and chemicals

Global trade impact on the spread of toxic substances
TNCs contributing to the production and distribution of toxins
Environmental Issues
Improper disposal leading to environmental contamination
Climate Change

Feedback loops with the release of stored toxins

Influence on the distribution of toxins and pollutants

Biomagnification

Consequences of Biomagnification

Intensifies the concentration of substances as they move up the food chain

Impact on food webs

Risks for humans consuming organisms higher in the food chain

Bioaccumulated substances can move through the food chain, with higher trophic levels experiencing greater concentrations

Ecosystem imbalances

Impact on ecosystems

Health issues

Reproductive problems

Presence of bioaccumulative substances in aquatic environments

Impact on aquatic life

Gradual buildup of substances in living organisms over time
Persistent organic pollutants (POPs)

Industrial chemicals

Certain pesticides

Occurs when an organism absorbs a substance at a rate greater than it eliminates or metabolizes it
Typically pollutants or toxins