Environment
Heat Pumps Explained: How They Work and Whether They Are Worth It
Heat pumps can heat a home using far less energy than a traditional boiler or furnace. Here is how the technology works, what it…
Environment
Climate, energy, conservation and the future of the planet.
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Environment
What Is Biodiversity and Why It Matters
Biodiversity is the variety of life at every level, from genes to species to whole ecosystems. Here is what it means, the…
Environment
How Solar Panels Turn Light Into Electricity
Solar panels convert sunlight directly into electricity using the photovoltaic effect. Here is what happens inside a solar cell…
Environment
The Carbon Cycle Explained
Carbon constantly moves among the atmosphere, oceans, land and living things. Here is how that natural cycle works and how human…
Environment
Water Scarcity Explained
Water scarcity is when demand for fresh water outstrips the available, reliable supply. Here is what causes it, the impacts on…
Environment
What Is a Carbon Footprint (and How to Shrink Yours)?
A carbon footprint is the total greenhouse gas emissions caused by a person, product or organisation. Here is how it is measured…
Environment
How Electric Cars Work
An electric car runs on a battery and electric motor instead of a petrol or diesel engine. Here is how the battery, motor and…
Environment
Renewable Energy Explained: Solar, Wind and More
Renewable energy comes from sources that naturally replenish, such as sunlight, wind and water. Here are the main types, their…
Environment
Recycling Explained: What Really Happens to Your Waste
Recycling turns used materials back into new products, but only if they are sorted and clean. Here is how the process works, why…