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Loneliness does more than pull on your heart strings — it may hurt your heart

Loneliness does more than pull on your heart strings — it may hurt your heart

Health
Silent, uncomfortable, forlorn, withdrawn -- these are all feelings likely felt by the lonely. Research shows that these feelings don’t just cause emotional stress, they are part of a real association between social isolation and negative health outcomes. For the first time, studies are looking at heart failure in lonely people. Over 6 million people live with heart failure in the United States, with over 960,000 new cases diagnosed each year. By 2030, there may be more than 8 million cases of heart failure. “One in five Americans over the age of 40 are affected by heart failure,” Dr. Clyde Yancy, American Heart Association (AHA) spokesperson and chief of the cardiology division at Northwestern University's Feinberg School of Medicine, told ABC News. It’s a con...
Waterwheel: Ten times faster than a Venus flytrap

Waterwheel: Ten times faster than a Venus flytrap

Science
Scientists have characterised the movement of the Venus flytrap's aquatic cousin in detail for the first time.The carnivorous Aldrovanda vesiculosa, also known as the waterwheel plant, snaps its "trap" shut ten times faster than the flytrap.As it is quite rare in the wild, the plant's mechanism has not previously been studied in great detail.It is thought that the waterwheel and the flytrap may share a common ancestor.However there is no fossil evidence for what this ancestor might have looked like."This is one of the main questions in the carnivorous plant community," says Dr Simon Poppinga, an author on the study."Snap traps evolved only once in plants. There are two different mechanisms. Which one was first?"A stressful lifeThe study, led by Anna Westermeier and Renate Sachse at the Uni...
Tourism's carbon impact three times larger than estimated

Tourism's carbon impact three times larger than estimated

Science
A new study says global tourism accounts for 8% of carbon emissions, around three times greater than previous estimates. The new assessment is bigger because it includes emissions from travel, plus the full life-cycle of carbon in tourists' food, hotels and shopping.Driving the increase are visitors from affluent countries who travel to other wealthy destinations. The US tops the rankings followed by China, Germany and India. Tourism is a huge and booming global industry worth over $ 7 trillion, and employs one in ten workers around the world. It's growing at around 4% per annum.Previous estimates of the impact of all this travel on carbon suggested that tourism accounted for 2.5-3% of emissions. However in what is claimed to be the most comprehensive assessment to date, this new study exa...
I Ate Pizza for Breakfast Every Day for a Week—Because a Nutritionist Said It Was Healthier Than Cereal

I Ate Pizza for Breakfast Every Day for a Week—Because a Nutritionist Said It Was Healthier Than Cereal

Health
I’ve always been a fan of pizza. In high school, I looked forward to the one time each week my parents would order a pie for dinner—and then the cold leftover slice I would inevitably eat for breakfast the following morning. So when I heard about a nutritionist who said pizza can be healthier than a bowl of cereal for breakfast, I was intrigued.Instead of eating my usual cereal or Greek yogurt for breakfast, I thought it was worth trying pizza for five days straight. The right pizza supposedly can provide more nutrients than a bowl of sugary corn flakes, the nutritionist said, and I wanted to test the theory. To make sure I was doing breakfast pizza the right way, I spoke with Health contributing nutrition editor Cynthia Sass, MPH, RD, who provided a few ess...