Multiple industrial and agricultural revolutions have profoundly transformed the world, but these revolutions are changing the climate of Earth. Most of our energy sources and many of the materials we use are based on fossil-fuel.
The challenges how to provide clean energy, water, air and food in a world of 8.2 billion people and projected to be 9.8 billion by 2050 are formidable. After a brief summary of our current trajectory, the progress, opportunities and challenges needed to achieve net-zero greenhouse emissions will be discussed.
