How the world is moving to greener alternatives for energy sources

Burning fossil fuels, such as coal, oil and gas for energy production is the largest contributor to global climate change, accounting for nearly 90% of all carbon dioxide emissions and over 75% of the global greenhouse gas emissions that are trapping the sun’s heat and warming up the Earth at a faster rate than it has ever been.

A pivot from the world's current reliance on fossil fuel to renewable energy sources to generate energy is key in helping to reduce greenhouse gas (GHG) emissions and make a climate-neutral world. Taking early measures (a change in our energy sources to greener alternatives) will help mitigate the increasing risk that a fast-changing climate inevitably holds.

Not to dwell too much on the risks that a warming earth holds, how are big economies responding to this and what technological solutions are they adopting?