Energy

Here’s What You Really Should Know About ‘Negative-Calorie’ Foods, According to Experts

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The internet is full of quick-fix weight-loss hacks. One popular suggestion is to eat ‘negative-calorie’ foods such as celery, because you burn more energy eating and digesting the celery than you absorb.   Is it true that eating some foods makes us lose calories rather than gain them? And does eating these foods help weight loss? We … Read more

CA Law Aims to Turn Food Waste into Renewable Energy

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California is poised to launch the nation’s biggest program to prevent food waste from going into landfills as a way to reduce greenhouse gas emissions and generate clean energy. A law taking effect in January will require municipalities across the state to collect food waste for its potential use in making renewable natural gas for … Read more

Energy efficiency: Smart windows keep heat in during winter and let heat out in summer

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Radiative cooling means ordinary windows are not very effective at keeping buildings warm or cool as required, but modified windows could help save energy Technology 16 December 2021 By Chen Ly Windows in a house covered by snow Botastock images/Alamy A smart window that automatically keeps heat in during the winter and lets it out … Read more