3 . The streets and roofs of cities all absorb heat, making some urban areas hotter than rural ones. These “urban heat islands” can also develop underground as city heat spreads downward, and subway tracks and other subsurface infrastructure(基础设施) also constantly radiate warmth into the surrounding earth.

A new study of downtown Chicago shows underground hotspots may threaten the very same structures that give off the heat in the first place. “Without anyone realizing it, the city of Chicago’s downtown was deforming,” says study author Rotta Loria, an environmental engineer.

Humans aren’t the only potentially affected. “For a lot of things in the subsurface, it’s kind of ‘out of sight, out of mind’,” says Grant Ferguson, a geologist. But the underground world is full of creatures that have adapted to subsurface existence such as insects and snails. As the temperature rises because of climate change and underground urban development, scientists are keeping eyes on the potential implications for underground ecosystems.

But the question of how underground hotspots could affect infrastructure has gone largely unstudied. Because materials expand and contract with temperature change, Rotta suspected that heat coming from underground could be contributing to wear and tear on various structures. To understand how underground temperature difference has affected the ground’s physical properties, he used a computer model to simulate(模拟) the underground environment from the 1950s to now—and then to 2050. He found that by the middle of this century, some areas may lift upward by as much as 0.50 inch or settle by as much as 0.32 inch, depending on the soil makeup of the area involved. Though these may sound like small displacements, Rotta says they could cause cracks in the foundations of some buildings, causing buildings to fall.

Kathrin Menberg, a geoscientist in Germany, says these displacement predictions are far beyond her guesses and could be linked to the soft, clay-heavy soils. “Clay material is particularly sensitive,” she says, “It would be a big issue in all cities worldwide that are built on such material.”

Like climate change above the surface, underground changes occur gradually. “These effects took decades to develop,” Ferguson says, adding that increased underground temperatures would likewise take a long time to dissipate on their own. “We could basically turn everything off, and it’s going to remain there, the temperature signal, for quite a while.”

But Ferguson says this wasted heat energy could also be reused, presenting an opportunity to both cool the subsurface and save on energy costs. Still, this assumption could fail as aboveground climate change continues to boost underground warming. However slowly, this heat will gather beneath our feet. “It’s like climate change,” Rotta Loria says. “Maybe we don’t see it always, but it’s happening.”

4 . Are you looking for teen volunteer opportunities for 2024 that provide a rewarding experience that will stay with you for life? Every year thousands of teens choose to volunteer abroad with International Volunteer HQ(IVHQ)-the world’s most trusted provider of safe and affordable volunteer programs for teens.

Service trips for teens are available in more than 50 destinations and there are 17 teen volunteer programs for 16 to 18 year-olds. Some of the best programs in 2024 include Turtle Conservation in Bali, Animal Care in Costa Rica and Childcare in Tanzania. Or, if you’re wanting to volunteer with a group of students from your high school, IVHQ can tailor a program for your group too!

Benefits for volunteers:

There is no doubt that volunteering as a teenager is a meaningful way to broaden your education and add experiences that will stand out on your college application.

Crossing boundaries to work with partners from different parts of the world fosters global understanding.

Living in a country different to your own means that you will be involved in a new culture, cuisine, and way of thinking.

Guaranteed support:

Chances are your parents will also want to learn more about IVHQ, whether or not they will go abroad with you. Having placed more than 130, 000 volunteers abroad, we’re always happy to speak with parents to ensure all their questions are fielded. Through our online safety training, comprehensive information brochures, on-going support from experienced program managers and round-the-clock support from our local teams, IVHQ volunteers are well supported to make the most of the time abroad.

If you’re ready to pack your bags and experience a completely different lifestyle and widen your global perspective, please contact us. IVHQ will be more than happy to offer a service.

5 . You’ve raced to the supermarket only to realise you’ve left the shopping list home. You need to memorise which groceries to pick up before you forget. Thankfully, there’s a memory aid that’s perfect for the job: the peg-word method.

What is the peg-word method?

It employs a set of pre-determined words, regarded as peg words, for the to-be-remembered information. Peg words act as a structure to help you remember particular items. Essentially, you’re hanging information you need to recall on these pegs, which allows it to be recalled quickly and easily.

Initially, to use this method, you will have to remember the peg words as well as the numbers:

The next step is to create associations between the information you need to remember and the item linked with the corresponding number. If the first item, for instance, is milk, then you need to visualise the milk and a bun (小圆面包) together. The more unusual you can make your image, the more likely you are to remember it. In this case, you could imagine a bun drinking a glass of milk.

Why is it useful?

As the case shows, it is most useful when it comes to remembering lists and you can recall the listed items easily in order. Another way to use this memory aid is to memorise important numbers, like phone numbers or dates. For instance, you need to remember that William Shakespeare was born in the year 1564. First, change that number to bun-hive-sticks-door. Then imagine a story to help you remember the series:

William Shakespeare put a bun in a beehive to coat it in honey, but he didn’t like how sticky it became so he threw it at a door.

The peg-word method has been wildly recognized as a helpful memory aid. For more information, please visit https://jojomemory.com/.

6 . Research spanning several decades demonstrates that you are more likely to think the information that is repeated to be true than the information you hear only once. You usually assume that if people put in effort to repeat a statement, this reflects the truth of the statement. This tendency-also called the truth effect-is a bias (偏见) that can lead you to draw incorrect conclusions.

To what degree are people aware of the truth effect? This question was addressed in a paper in the journal Cognition early this year.

In the critical study in this paper, participants did two sessions. In one session, they read about a hypothetical (虚构的) study in which they were exposed to some statements and then were asked whether both statements they had heard before as well as these new statements were true. They were asked to predict the proportion (比例) of each statement that would be judged as true. They did this both as a prediction of other people’s performance as well as a prediction of how they would do in this study.

At another session a few days later, participants actually performed this study, reading a set of 20 statements in the hypothetical study again and then judging the truth of altogether 40 statements, half of which were from the hypothetical study and the other half of which were new.

This study did replicate the well known truth effect. People were more likely to judge statements they had seen before as true than statements that were new. Two interesting findings emerged from the prediction. First, participants tended to underestimate the size of the truth effect for everyone. T hat is, while they did expect some difference in judgments between the statements seen before and those that were new, they thought this difference would be smaller than it actually was. Second, participants more significantly underpredicted the truth effect for themselves compared to that for other people.   

This study is particularly important in light of the amount of misinformation present in social media. Many people have the power to influence public opinion about important matters. Flooding social media feeds with misinformation will lead people to believe this information is true just because it is stated. Recognizing that we are all susceptible to this influence of repeated information should lead us to mistrust our intuition (直觉) about what is true and to look up important information prior to using it to make important judgments and decisions.

7 . Are you looking for teen volunteer opportunities for 2024 that provide a rewarding experience that will stay with you for life? Every year thousands of teens choose to volunteer abroad with International Volunteer HQ(IVHQ)-the world’s most trusted provider of safe and affordable volunteer programs for teens.

Service trips for teens are available in more than 50 destinations and there are 17 teen volunteer programs for 16 to 18 year-olds. Some of the best programs in 2024 include Turtle Conservation in Bali, Animal Care in Costa Rica and Childcare in Tanzania. Or, if you’re wanting to volunteer with a group of students from your high school, IVHQ can tailor a program for your group too!

Benefits for volunteers:

There is no doubt that volunteering as a teenager is a meaningful way to broaden your education and add experiences that will stand out on your college application.

Crossing boundaries to work with partners from different parts of the world fosters global understanding.

Living in a country different to your own means that you will be involved in a new culture, cuisine, and way of thinking.

Guaranteed support:

Chances are your parents will also want to learn more about IVHQ, whether or not they will go abroad with you. Having placed more than 130, 000 volunteers abroad, we’re always happy to speak with parents to ensure all their questions are fielded. Through our online safety training, comprehensive information brochures, on-going support from experienced program managers and round-the-clock support from our local teams, IVHQ volunteers are well supported to make the most of the time abroad.

If you’re ready to pack your bags and experience a completely different lifestyle and widen your global perspective, please contact us. IVHQ will be more than happy to offer a service.

8 . The streets and roofs of cities all absorb heat, making some urban areas hotter than rural ones. These “urban heat islands” can also develop underground as city heat spreads downward, and subway tracks and other subsurface infrastructure (基础设施)  also constantly radiate warmth into the surrounding earth.

A new study of downtown Chicago shows underground hotspots may threaten the very same structures that give off the heat in the first place. “Without anyone realizing it, the city of Chicago’s downtown was deforming,” says study author Rotta Loria, an environmental engineer.

Humans aren’t the only potentially affected. “For a lot of things in the subsurface, it’s kind of ‘out of sight, out of mind’,” says Grant Ferguson, a geologist. But the underground world is full of creatures that have adapted to subsurface existence such as insects and snails. As the temperature rises because of climate change and underground urban development, scientists are keeping eyes on the potential implications for underground ecosystems.

But the question of how underground hotspots could affect infrastructure has gone largely unstudied. Because materials expand and contract with temperature change, Rotta suspected that heat coming from underground could be contributing to wear and tear on various structures. To understand how underground temperature difference has affected the ground’s physical properties, he used a computer model to simulate (模拟)  the underground environment from the 1950s to now—and then to 2050. He found that by the middle of this century, some areas may lift upward by as much as 0.50 inch or settle by as much as 0.32 inch, depending on the soil makeup of the area involved. Though these may sound like small displacements, Rotta says they could cause cracks in the foundations of some buildings, causing buildings to fall.

Kathrin Menberg, a geoscientist in Germany, says these displacement predictions are far beyond her guesses and could be linked to the soft, clay-heavy soils. “Clay material is particularly sensitive,” she says, “It would be a big issue in all cities worldwide that are built on such material.”

Like climate change above the surface, underground changes occur gradually. “These effects took decades to develop,” Ferguson says, adding that increased underground temperatures would likewise take a long time to dissipate on their own. “We could basically turn everything off, and it’s going to remain there, the temperature signal, for quite a while.”

But Ferguson says this wasted heat energy could also be reused, presenting an opportunity to both cool the subsurface and save on energy costs. Still, this assumption could fail as aboveground climate change continues to boost underground warming. However slowly, this heat will gather beneath our feet. “It’s like climate change,” Rotta Loria says. “Maybe we don’t see it always, but it’s happening.”

9 . Have we reached the peak of the culture war? Looking at my social media feeds, it seems that polarised thinking and misinformation have never been more common. How am I supposed to feel when users I once admired now draw on questionable evidence to support their beliefs?

Perhaps it is time for us all to adopt a little “existential humility”. I came across this idea in a paper by Jeffrey Greenat Virginia from Common Wealth University and his colleagues. They build on a decade of research examining the benefits of “intellectual humility” more generally — our ability to recognise the errors in our judgement and remain aware of the limits of our knowledge.

You can get a flavour of this research by rating your agreement with the following statements, ranging from 1 (not at all like me) to 5 (very like me): I question my own opinions because they could be wrong; I recognise the value in opinions that are different from my own; in the face of conflicting evidence, I am open to changing my opinions.

People who score highly on this assessment are less likely to form knee-jerk reactions on a topic, and they find it easier to consider the strengths or weaknesses of a logical argument. They are less likely to be influenced by misinformation, since they tend to read the article in full, investigate the sources of a news story and compare its reporting to other statements, before coming to a strong conclusion about its truth.

Developing “intellectual humility” would be an excellent idea in all fields, but certain situations may make it particularly difficult to achieve. Greenat points out that some beliefs are so central to our identity that any challenge can activate an existential crisis, as if our whole world view and meaning in life are under threat. As a result, we become more insistent in our opinions and seek any way to protect them. This may reduce some of our feelings of uncertainty, but it comes at the cost of more analytical thinking.

For these reasons, Greenat defines “existential humility” as the capacity to entertain the thought of another world view without becoming so defensive and closed-minded. So how could we achieve it? This will be the subject of future research, but the emotion of awe (a feeling of great respect and admiration) may offer one possibility. One study found that watching awe-inspiring videos about space and the universe led to humbler thinking, including a greater capacity to admit weaknesses.

Perhaps we could all benefit from interrupting our despair with awe-inspiring content. At the very least, we can try to question our preconceptions before offering our views on social media and be a little less ready to criticize when others disagree.

10 . The streets and roofs of cities all absorb heat, making some urban areas hotter than rural ones. These “urban heat islands” can also develop underground as city heat spreads downward, and subway tracks and other subsurface infrastructure (基础设施)  also constantly radiate warmth into the surrounding earth.

A new study of downtown Chicago shows underground hotspots may threaten the very same structures that give off the heat in the first place. “Without anyone realizing it, the city of Chicago’s downtown was deforming,” says study author Rotta Loria, an environmental engineer.

Humans aren’t the only potentially affected. “For a lot of things in the subsurface, it’s kind of ‘out of sight, out of mind’,” says Grant Ferguson, a geologist. But the underground world is full of creatures that have adapted to subsurface existence such as insects and snails. As the temperature rises because of climate change and underground urban development, scientists are keeping eyes on the potential implications for underground ecosystems.

But the question of how underground hotspots could affect infrastructure has gone largely unstudied. Because materials expand and contract with temperature change, Rotta suspected that heat coming from underground could be contributing to wear and tear on various structures. To understand how underground temperature difference has affected the ground’s physical properties, he used a computer model to simulate (模拟)  the underground environment from the 1950s to now—and then to 2050. He found that by the middle of this century, some areas may lift upward by as much as 0.50 inch or settle by as much as 0.32 inch, depending on the soil makeup of the area involved. Though these may sound like small displacements, Rotta says they could cause cracks in the foundations of some buildings, causing buildings to fall.

Kathrin Menberg, a geoscientist in Germany, says these displacement predictions are far beyond her guesses and could be linked to the soft, clay-heavy soils. “Clay material is particularly sensitive,” she says, “It would be a big issue in all cities worldwide that are built on such material.”

Like climate change above the surface, underground changes occur gradually. “These effects took decades to develop,” Ferguson says, adding that increased underground temperatures would likewise take a long time to dissipate on their own. “We could basically turn everything off, and it’s going to remain there, the temperature signal, for quite a while.”

But Ferguson says this wasted heat energy could also be reused, presenting an opportunity to both cool the subsurface and save on energy costs. Still, this assumption could fail as aboveground climate change continues to boost underground warming. However slowly, this heat will gather beneath our feet. “It’s like climate change,” Rotta Loria says. “Maybe we don’t see it always, but it’s happening.”