Copia - NATURAL & MAN-MADE DISASTERS

NATURAL & MAN-MADE DISASTERS

Natural as well as man-made disasters have terrible consequences on a destination and its environment direct impact on tourism.

Disaster is a sudden calamitous event bringing great damage, loss, or destruction.

outbreak and spread of a disease/epidemic, forest fires

Examples: transport accidents, cyber-crime, oil and other hazardous material spills, fires, riots, nuclear explosions, terrorist attacks, etc.

Examples: volcanic eruption, epidemics, flood, drought, tsunami, hurricane, tornado, earthquakes, landslides, avalanche, etc.

disaster caused by nature, and men have no control over them. Such disasters cause massive loss of life, property, and many other miseries.

can be more localised than natural disasters and may interest a smaller area (city)

MAN-MADE

NATURAL

Disasters can be classified into two basic categories based on their cause

Avalanche

Tsunami

Floods

Natural disasters

Earthquake

Hurricane

Tornado

Drought

Landslide

Volcanic eruption

Climate change and global warming

Two of the most pressing issues of the world today

What are they?

Consequences?

Causes

The principal causes are the widespread burning of fossil fuels including coal, oil and gas for electricity, heating, cooling and transportation, leading to the emission of carbon dioxide and other greenhouse gases ( greenhouse effect . ) These gases become trapped in the atmosphere, causing the planet to gradually warm.

GLOBAL WARMING is a gradual and increasingly irreversible rise in average world temperatures caused mostly by human activities

Sunlight, with the natural greenhouse effect process, makes the earth habitable. While around 30 percent of the solar energy (the light and heat from the sun) that reaches our world is reflected back into space, the rest is either absorbed by the atmosphere or the earth’s surface. This process, which is constantly happening around the globe, warms the planet. This heat is then radiated back up in the form of invisible infrared radiation. While some of this infrared light continues on into space, the vast majority gets absorbed by atmospheric gases, known as greenhouse gases, causing further warming. Higher concentrations of greenhouse gases, and carbon dioxide (CO2) in particular (due to the burning of fossil fuels and deforestation), are causing extra heat to be trapped and average global temperatures to rise. The release of greenhouse gases associated with human activities and climate change is referred to as greenhouse gas emissions or climate pollution. And since the start of the Industrial Revolution and the advent of coal-powered steam engines, human activities have supersized the volume of greenhouse gases emitted into the atmosphere.

What Causes the Greenhouse Effect?

The greenhouse effect is the natural warming of the earth that results when gases in the atmosphere trap heat from the sun that would otherwise escape into space.

What is the Greenhouse Effect?

Altering ecosystems and natural habitats

making wet regions wetter and dry regions drier

Raising sea levels and increase in ocean temperatures

Intensifying precipitation extremes

Causing frequent and/or intense extreme weather events

Driven by the burning of fossil fuels, global warming is altering the earth’s climate systems in many ways:

Today, concentrations of human-caused greenhouse gases in the atmosphere are higher than ever and the planet is heating up.

The consequences of the Greenhouse Effect

What can we do to help/save our planet and become more sustainable?

L. Di Caprio's moving speeches on climate change at the United Nations headquarters in NYC.

talk about global solutions to the problem

mention scientific research and evidence

share news on social media

organising educational projects and events

Famous climate change activists

Raising people awareness

Reducing our greenhouse gas emissions will require significant effort at the international, national, and local levels.

Possible solutions

1) reduce fossil fuel production, consumption, and pollution to slow down climate change How? - increasing the use of clean, renewable energies and energy-efficient technologies - use public transports or alternative, eco-friendly means of transport - minimize damage to natural resources like rainforests reforest damaged areas - take carbon-cutting actions in our daily lives - save water and electricity: taking showers instead of baths, turning off the lights - reduce your waste use less plastic packaging, use a reusable bottle and cloth bags when shopping - compost food - recycle (enforce fines for littering) - conserve energy - increase the use of renewable energies, invest in clean energy projects

• Other sources

• Buildings

• Transportation

• Industry

• Agriculture and land use

• Electricity and heat production

The burning of fossil fuels for electricity and transportation, as well as land use patterns and agriculture, and industrial processes drive nearly all human-caused greenhouse gas emissions.

Where Do Greenhouse Gases Come From?

THANKS!