Comprehensive Notes on Environmental Issues

Environmental Issues

Pollution Overview

  • Pollution is one of the most significant environmental issues. It affects more than 100 million people worldwide.

  • More than 1 billion people globally do not have access to safe drinking water.

  • 5,000 people die every day as a result of drinking unclean water.

  • Pollution kills more than 1 million seabirds and millions of mammals every year.

Pesticides

  • Pesticides, when introduced into any environment, can cause:

    • Birth defects

    • Genetic mutations

    • Cancer

Clean Environments

  • Antarctica is recognized as the cleanest place on Earth, protected by strict anti-pollution laws.

  • Half of the world's hospital beds are occupied by patients suffering from diseases related to pollution.

Water Resources and Food Production

  • 70% of the world's freshwater resources are needed for food production.

  • Increasing food production for the growing world population will require more freshwater resources.

  • 25 babies are born every minute in some parts of the world.

Climate Change and Land Degradation

Climate Change Impact

  • According to a report by Oxfam, climate change could push food prices up by 50–60% by 2030.

  • 24% of global land is degraded due to soil erosion (Source: IPBES).

  • 13% of global forests have been lost since 1990 (Source: FAO).

Wastewater Release

  • 80% of wastewater is released into the environment without treatment (Source: UN).

Biodiversity and Urbanization

Extinction and Habitat Changes

  • The 3rd toad is the first species to go extinct due to climate change.

  • The global temperature has increased on average by 0.6 to 1 degree Celsius.

  • It is expected that by 2050, 70% of the world population will live in cities.

Natural Disasters

  • Natural disasters kill approximately 90,000 people each year.

  • Ocean pollution is said to originate from 80% of land sources.

  • The deepest spot on Earth is the Mariana Trench in the Pacific Ocean, reaching a depth of 35,813 feet.

Geological and Seismic Activity

Volcanoes and Earthquakes

  • Between 10 to 20 volcanoes are erupting somewhere on Earth every day.

  • There are about 500,000 detectable earthquakes worldwide each year, with 1% being felt and 10% causing damage.

Rainfall Anomalies

  • Rain has never been recorded in Chiles Atacama Desert, which is the driest place on Earth.

Carbon Emissions

  • 20% of the Earth’s oxygen is produced by the Amazon rainforest.