How Many People Can Earth Sustain?

In summary, the documentary "BBC Horizon - How Many People Can Live on Planet Earth 2009" discusses the growing population and its impact on the planet. It is estimated that Earth can sustain up to 15-18 billion people if they consume resources at the same rate as the average Indian or Rwandan, but only 1.5-2.5 billion people if they live in a lifestyle similar to those in the US or UK. This is already causing water scarcity and damaging ecosystems. The documentary suggests that we need to change our way of living and resource usage to sustain the growing population.
  • #1
Chaballa
13
0
Recently watched a documentry(BBC Horizon - How Many People Can Live on Planet Earth 2009) and its scary, could be worse than Global warming..

There are almost 7 billion people in the world today and numbers are increasing rapidly. Soon there'll be 8-9 billion people and we'll all feel the impact. (cos each human need water, food, energy, shelter, n hopefully whole lot more)

Earth can sustain upto ~15-18 billion people IF everyone consume(water, food, energy) as little as average Indian or Rwandan.. but Earth can only sustain maximum 1.5-2.5 billion people living in the lifestyle of those in US or UK. n these figures are bases on rates of consumption that many think are already unsustainable.

"Already today more than 1.2 billion people living with water scarcity."
"Even setting aside the moral responsiblity we have to protect other species, if we continue to damage our ecosystems, we damage ourselves."
"It's clear that we'll have to change the way we live and use our resources."
 
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  • #2
We're already feeling the impact with the numbers we have!
 

Related to How Many People Can Earth Sustain?

1. How do scientists determine the Earth's carrying capacity for humans?

Scientists determine the Earth's carrying capacity by looking at various factors such as the planet's resources, land area, and energy availability. They also consider the impact of human activities on the environment and the planet's ability to sustain these activities.

2. Is there a specific number of people that the Earth can sustain?

No, there is no specific number that the Earth can sustain. The carrying capacity for humans is not a fixed number and can change over time depending on various factors such as technological advancements, resource management, and population growth.

3. How does overpopulation affect the Earth's sustainability?

Overpopulation can have a significant impact on the Earth's sustainability. It can lead to depletion of resources, environmental degradation, and an increase in pollution and waste. Overpopulation also puts a strain on food and water supplies, leading to food insecurity and water scarcity.

4. Can the Earth sustain more people with advancements in technology?

Advancements in technology can potentially increase the Earth's carrying capacity for humans. For example, efficient farming methods and renewable energy sources can help sustain a larger population. However, it is essential to ensure that these advancements are sustainable and do not further harm the environment.

5. What can individuals and governments do to help sustain the Earth's population?

Individuals and governments can take various actions to help sustain the Earth's population. These can include implementing sustainable practices, promoting responsible consumption and waste reduction, investing in renewable energy, and supporting family planning and education programs. It is crucial for everyone to recognize their role in preserving the planet's resources for future generations.

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