Climate and energy, explained.
Plain-language guides to global warming, climate change and the renewable energy that can slow it down.
Global warming
What is changing, how fast, and what the measurements show.
Sustainable energy
Energy that meets today's needs without borrowing from tomorrow.
Renewable sources
Sun, wind, water and heat from the earth - how each one works.
How much of your power could come from the sun?
Questions we hear most
What causes global warming?
Mostly the greenhouse gases released by burning coal, oil and gas. They trap heat that would otherwise escape into space. Read more
What is the greenhouse effect?
A natural process that keeps the earth warm enough to live on - made stronger by the extra gases we add. Read more
Is a hybrid better than an electric car?
Not always. In some regions and for some drivers, a hybrid is still the cleaner and cheaper choice. Read more
How does water power make electricity?
Falling water turns turbines connected to generators - one of the oldest renewable sources we have. Read more
What are the effects of global warming?
Rising seas, stronger storms, longer droughts and shrinking ice - the article explains each one. Read more
Natural gas: helper or hindrance?
It burns cleaner than coal, but it is still a fossil fuel. The article weighs up what gas really does for the climate.
Hybrids and electric cars
Where the hybrid still wins.
World Sustainable Energy Days
The conference that brings energy experts together.
Clean. Renewable. Efficient.
The cleanest energy is the energy we never use - and the next cleanest comes from sun, wind and water.