Hydropower is the most widely used renewable energy source globally, as it harnesses the energy of flowing water to generate electricity.

Energy production, including electricity generation and heat production, contributes the most greenhouse gas emissions, largely due to fossil fuel combustion.

When polar ice caps melt, water previously stored as ice flows into the ocean, raising sea levels and threatening coastal communities.

Carbon dioxide is responsible for the majority of human-caused global warming, as it remains in the atmosphere for centuries and traps heat effectively.

The Paris Agreement aims to unite countries in efforts to reduce greenhouse gas emissions and prevent global temperatures from rising by more than 2°C above pre-industrial levels.

Greenhouse gas emissions, particularly carbon dioxide from burning fossil fuels, trap heat in the Earth's atmosphere, causing global temperatures to rise.

When oceans absorb CO₂, it reacts with seawater to form carbonic acid, lowering the pH and making the oceans more acidic.

Deforestation reduces the number of trees available to absorb carbon dioxide, leading to higher CO₂ levels and contributing to global warming.