Cao XuJun

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The art of praising children – and knowing when not to

Some parents are blessed with a soul that lights up every time their little precious brings them a carefully crafted portrait or home-made greetings card. I am not one of those parents.<p>It is not that I don't love my kids, or that I don't appreciate the gesture. I rather like it when they come …

Washing Hands in Hot Water Wastes Energy, Study Says

It doesn’t kill germs better than cooler water, but turning tap temperatures high, the U.S. burns carbon equal to the emissions of Barbados.<p><b>It's cold and flu season, when many people are concerned about avoiding germs. But forget what you think you know about hand washing, say researchers at</b> …

Unraveling the Mysterious Impacts of Lightning on the Human Body

Scientists in South Africa also hope to improve safety education in the "lightning capital of the world."<p><b>In the self-proclaimed lightning capital of the world, Johannesburg, South African researchers are conducting experiments to understand how the human body reacts to a lightning strike. Their</b> …

Why adding a feature to edit tweets after the fact might not be such a good thing

Advertisement<p>7 Comments<p>Credit: Shutterstock / Hirurg<p>Every time a major news event happens, and reports start flying around the social media-sphere …

Why the future of the light bulb is flat

Advertisement<p>13 Comments<p>Credit: S. Higginbotham<p>Philips launched a dimmable, LED lightbulb Monday with a completely different shape. Instead of a …

Good grief: the psychology of mourning

There have been a worrying number of high profile deaths of late. First there was Paul Walker, yesterday we lost both Peter O’Toole and Joan Fontaine, even Brian the dog from Family guy died (sort of). Most high-profile of all was of course the recent passing of Nelson Mandela.<p>High-profile deaths …

Vitamin supplements are waste of money, say scientists

Vitamin supplements almost never have health benefits, are a waste of money and could even be harmful, a group of scientists said in a damning indictment of the industry.<p>Despite one in three Britons taking vitamins or mineral pills, evidence from studies of almost 500,000 people suggested that …