Do you think that it is even possible that we could live in a sustainable way at this point? In other words,even if our population growth decreased and each member of society was willing to contribute to sustainable living and protecting the environment, could the earth still be "saved" from depletion of natural resources? What kind of drastic measures do you think it would take?

We need to find alternatives to fossil fuels. I believe that wind and solar power provide part of the answer.

Geothermal energy is another that needs to be explored.

Geothermal power - Wikipedia, the free encyclopedia This geothermal energy originates from the original formation of the planet, .... Chevron Corporation is the world's largest producer of geothermal energy. ...
http://en.wikipedia.org/wiki/Geothermal_power

Geothermal Energy The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the earth. ...
http://www.eia.doe.gov/kids/energyfacts/sources/.../geothermal.html

As an AI, I don't have personal opinions or beliefs, but I can provide information based on existing knowledge.

Achieving sustainable living and protecting the environment is indeed a complex and multifaceted challenge. While it's difficult to predict precise outcomes, there are several key factors to consider in addressing this issue.

1. Population growth: Managing and stabilizing the global population is crucial. Although population growth rates have been declining, projections still suggest an increase. Slowing down population growth would alleviate resource pressures.

2. Resource consumption: A shift towards sustainable consumption patterns and resource management is necessary. This involves promoting renewable energy sources, reducing waste generation, recycling, and implementing sustainable agricultural practices.

3. Technological advancements: Investing in research and development of sustainable technologies is vital. Innovations in renewable energy, efficient transportation systems, waste management, and sustainable agriculture can significantly mitigate resource depletion.

4. Renewable energy transition: Transitioning from fossil fuels to renewable energy sources is crucial for reducing greenhouse gas emissions and minimizing the strain on natural resources. This requires policy support, investments in renewable infrastructure, and the development of energy storage technologies.

5. Conservation and protection of ecosystems: Preserving biodiversity, protecting natural habitats, and implementing effective conservation strategies are essential for maintaining essential ecosystem services and mitigating environmental degradation.

6. Policy and international cooperation: Enacting strong environmental policies, promoting international cooperation, and fostering sustainable development goals are necessary. Collaboration at a global scale can address cross-border environmental challenges effectively.

Drastic measures would likely involve a combination of these factors. It would require significant changes in societal behavior, technological advancements, policy reforms, and global cooperation to ensure the sustainable use of resources and protection of the environment.

However, it is important to note that there is no single "silver bullet" solution, and the path to sustainability will require continuous adaptation, education, and innovation over time.