The biodegradable film scientists say could replace air conditioning

• Scientists from China and Australia have developed a new biodegradable metafilm designed to reduce building energy consumption.
• The film, made from plant-derived polylactic acid, passively reflects solar radiation and allows internal heat to escape, cooling surfaces without electricity.
• Testing showed the metafilm can reduce temperatures by up to 9.2C during peak sunlight hours and keep surfaces 4.9C cooler on average during the day.
• This environmentally friendly alternative to air conditioning is durable, maintaining performance even after prolonged exposure to harsh conditions.
• Computer simulations indicate the metafilm could cut annual energy consumption in hot cities by over 20 per cent, with potential future applications in various sectors.

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This new biodegradable film could save 20 per cent on energy bills