1 . Going to sleep at a certain time is associated with a lower risk of developing heart disease, according to researchers. A team led by the U.K. -based University of Exeter found that going to sleep between 10 and 11 p.m. was beneficial compared to earlier or later bedtimes.

The research included 88,000 participants in the U.K. Biobank who were recruited between 2006 and 2010. The average age of the group — ranging from 43 to 79 years old — was 61 and 58 percent were women. Participants filled out demographic (人口统计的), lifestyle, health and physical questionnaires, according to a European Society of Cardiology news release. The study looked at the association between objectively measured sleep onset timing and cardiovascular disease using wrist-worn accelerometers, collecting a week’s worth of data.

Using Cox proportional hazards models, an age- and sex-controlled base analysis found that sleep on set time of 10 to 10:59 p.m. was associated with the lowest incidence of cardiovascular (心血管的) disease. Another model that controlled for sleep duration, sleep irregularity and established cardiovascular risk factors like smoking status and body mass index did not reduce the impact of the association.

There was a 25 percent higher risk of cardiovascular disease with sleep onset at midnight or later, a 12 percent greater risk for 11 to 11:59 p.m. and a 24 percent raised risk for falling asleep before 10 p.m. compared to sleep onset from 10 to 10:59 p.m. More than 3,170 cases, or 3.6 percent, were reported during an average follow-up period of nearly six years. Sensitivity analyses revealed the association with increased risk of cardiovascular disease was stronger in women, with only sleep onset earlier than 10 p.m. significant for men.

“The body has a 24-hour internal clock, called circadian rhythm (昼夜节律), that helps regulate physical and mental functioning,” study author David Plans of the University of Exeter said in a statement. “While we cannot conclude causation from our study, the results suggest that early or late bedtimes may be more likely to disrupt the body clock, with adverse consequences for cardiovascular health.”

Mental health conditions are an increasing problem in Australia and around the world. Around one in two Australians will experience a mental health issue in their lifetime. Globally, about 1 in 10 people live with a mental health disorder.

Eating a diet rich in fruit and vegetables is associated with less stress, according to a new research from Edith Cowan University(ECU). The findings revealed people who ate at least 470 grams of fruit and vegetables daily had 10 percent lower stress levels than those who consumed less than 230 grams. Lead researcher, Simone Radavelli-Bagatini said, “We found that people who have higher fruit and vegetable intakes are less stressed than those with lower intakes, which suggests diet plays a key role in mental health.”

According to Ms Radavelli-Bagatini, some stress is considered normal, but long-term exposure can lead to a range of health problems including heart disease, depression and anxiety, so we need to find ways to prevent and possibly reduce mental health problems in the future.

Previous studies have shown the link between fruit and vegetable consumption and stress in younger adults. But this is the first time we’re seeing similar results across adults of all ages,” said Radavelli-Bagatini. While the mechanisms (机制)behind how fruit and vegetable consumption influences stress are still unclear. Radavelli-Bagatini said key nutrients could be a factor.

“Vegetables and fruits contain important nutrients such as vitamins, minerals andcarotenoids(类胡萝卜素) that can reduce inflammation(发炎) and oxidative (氧化应激) stress which are recognized factors that can lead to increased stress, anxiety and lower mood, and therefore improve mental health,”. she said. These findings encourage more researches into diet and specifically what fruits and vegetables provide the most benefits for mental health.

The Effects of a Warmer World Are Visible in Animals’ Bodies

For humans, adapting to climate change will mostly be a matter of technology. More air conditioning, better-designed houses and bigger flood defences may help mitigate the effects of a warm world.     1     In a paper published in Trends in Ecology & Evolution, a team led by Sara

Ryding, a phd candidate at Deakin University, in Australia, shows that is already happening. Climate change is already altering the bodies of many animal species, giving them bigger beaks, limbs and ears. In some species of Australian parrot, for instance, beak size has increased by between 4 % and 10 % since 1871.

All that dovetails (吻合)nicely with evolutionary theory. “Allen’s rule”, named for Joel Asaph Allen, who suggested it in 1877, holds that warm-blooded-animals in hot places tend to have larger appendages (附属物) than those in less hot regions.    2     For example, Fennec foxes, which are native to the Sahara desert, have strikingly large ears, especially compared with their Arctic cousins.

Ms Ryding examined museum specimens, comparing their bodies to those of their modern counterparts. She is not the first researcher to take that approach.     3     All sorts of other factors, from changes in prey to the evolving reproductive preferences of males or females, might possibly have been driving the changes. Her team combined data from different species in different places.Since they have little in common apart from living on a warming planet, she says, climate change is the most reasonable explanation.

    4     Researchers have already seen changes in the geographical range of many species, from insects to fish. Another evolutionary rule-of-thumb, Bergmann’s rule, holds that animals in hotter places tend to have smaller bodies, another way to boost the ratio between surface area and volume. Other animals may alter their behaviour as well as their bodies, such as by seeking shelter at hot times of the day.

Studying a broader range of animals will help firm up exactly what is happening. Much of Ms Ryding’s data concern birds, with less information available for other taxa (类群). But it seems clear that the world of the future is not just going to be hotter than humans are used to.    5    

6 . Stefani Shamrowicz lives in Colorado. The 24-year-old woman has spent 23 days picking up126 bags of rubbish across the country

Having over a month off from her job at a campus recreation center, Stefani Shamrowicz decided to take a trip to help clean up the environment.

She's now driven over 70 hours through Colorado, New Mexico, Arizona, Texas, Louisiana Florida,Georgia,Tennessee,Kentucky，Ohio，Pennsylvania，and New York-cleaning up everything from pee-filled bottles to lawn ornaments. About 80 percent of the rubbish was drinking bottles. Stefani said she had found a few fast-food toys and a tire with a pair of cowboy boots in it and her aim wasn't to shame, but rather encourage people to do what they can

Collecting anywhere from one to 16 bags at a time, Stefani's been discouraged. She felt she wasn't doing enough. She said there was a place that had an ocean of rubbish and she pushed out four bags, but then she broke down because she realized how much rubbish there was and it felt like four bags didn't do anything. But she remembered to just do what she could, especially since she had gone beyond her goal. She said she dedicated that to her parents because they raised her to be an independent person and had been very supportive on the trip

People donated $10 a bag for Stefani to clean up in their name, which she uses for lodging and gas. The person's name is written on how many bags they've donated towards and Stefani posted a picture on her Instagram when they were filed, thanking them for helping clean up the cit she was in.

People online and in person have responded positively to the project. Stefani recalled people sent her pictures of bags of trash they picked up. Once, when she started doing a bag on the beach in Florida,two ladies saw her and started helping her fill the bag.

With her job resuming June 1, Stefani is now back home but she has so many good things to say about her unique U.S.road trip.There's litter everywhere, so I'm just happy to be able to make a little bit of an impact everywhere I go. Cleaning up this litter is a huge thank you for all the joy and good times national parks and nature in general has brought to my life,”she said.

Recent research suggests that if an argument gets resolved，the emotional response tied to it is significantly reduced or almost completely erased．Thus，it may be worth bringing up issues with your friends， family members，or classmates rather than holding them back．

There is a difference between arguing and fighting．Arguing is that you and your opponent present your concerns and discuss the feelings and issues related to those concerns．You can engage in an argument respectfully without stirring up（激起） anger．Fighting，however，usually involves personal attacks，raising of voices， and storming out．Discussing your issues and resolving them instead of stuffing them down can improve your emotional health．In a study，2.000 people were asked to record their feelings and experiences for eight days in a row．When people had an argument that they considered resolved， they had half the reactivity （情绪反应） of those who avoided an argument．Reactivity is an increase in negative emotions or a decrease in positive emotions．In other words，resolving an argument cuts your negative feelings by half．One day later， people who had a resolved argument reported no increase of negative emotions compared with those who avoided an argument． This means that resolving an argument can feel like you have reached a state of resolution——and you are less likely to be annoyed．

Moreover，the older you are，the more likely you will come to a resolution after an argument．This may be because more life experience usually leads to more defined priorities．You are more likely to distinguish between what matters and what does not．

It is easier to avoid a discussion，but risking talking about it may eventually lead to a better outcome．