Topic Reading-Vol.5150-5/31/2026

Dear MEL Topic Readers, 

This paint could cool your home and harvest water from the air

Cities are becoming hotter and hotter as concrete and rooftops absorb the sun’s energy, causing the urban heat island effect. If the sun’s energy is reflected, urban temperatures might be reduced during the summer. Do paints help increase the reflection of the sun’s energy? Total Solar Reflectance (TSR) measures how much sunlight a paint reflects. For example, black paint typically reflects less than 10% of sunlight, or absorbs 90% or more of the sun’s energy, while white paint reflects around 70% to 80% of incoming sunlight. Naturally, a white-painted building is cooler than a black-painted one under the sizzling summer sun. Now, an Australian startup has developed a special coating that reflects up to 96% of incoming sunlight, which keeps the roof surfaces as much as 6 degrees Celsius cooler than the surrounding air. If more rooftops are painted with this nanoengineered special coating, the urban heat island effect will be eased without costing any environmental burden. Also, if the surface temperature is lower than the surrounding temperature, moisture in the air is condensed on the surface, like water is formed on the outside of a cold glass. Once the water is collected, it can be used as a supplemental water source for the toilet or shower. Passive radiative cooling, a technology that cools surfaces by reflecting sunlight and radiating trapped heat outward into the cold sink of deep space, is expected to play a vital role in cooling cities while reducing carbon emissions.

Read the article and learn how city temperatures can be cooled without running air conditioning.

https://edition.cnn.com/science/dewpoint-paint-cool-home-water-harvest-climate-c2e-spc

Topic Reading-Vol.5149-5/30/2026

Dear MEL Topic Readers, 

'Everest Man' and 'Mountain Queen' break own records scaling world's tallest peak

This season, as many as 500 alpinists were permitted to climb Mount Everest from Nepal. Unfortunately, a massive block of glacial ice hindered the route to the summit and kept alpinists waiting nearly two weeks at the base camp. On May 13, the climbing route to the summit was officially cleared, and they started climbing the mountain. Among them was a renowned Nepali mountain guide, Kami Rita Sherpa, who broke his own record for scaling the 8,849-meter summit for the 32nd time. The 56-year-old mountain guide, known as the “Everest Man”, first scaled the peak in 1994 and has reached the summit almost every year. On the same day, a 52-year-old Lhakpa Sherpa, known as “Mountain Queen”, scaled the summit for her 11th time, breaking her own record for the most ascents by a female climber. A few days later, on the 20th, a record 274 climbers scaled Mount Everest from the south side. The world’s highest summit granted three records to climbers this season.

Read the article and learn about what happened at the top of the world this year.

https://www.bbc.com/news/articles/c3927ejpj4eo

Topic Reading-Vol.5148-5/29/2026

Dear MEL Topic Readers, 

Why Canada is seeing its biggest military recruitment surge in 30 years

Despite its massive geographic size, Canada has a relatively small population of just around 41 million. While having the longest border and coastline in the world, Canada has only about 68,000 active and 32,000 reserve military personnel. Even though the Canada-US border is the world’s longest land border, neither country protects its border against the other because they are NATO allies. And Canada has been relying on the US military power against its other neighbor, Russia. However, Russia’s invasion of Ukraine in 2022 and Trump’s reference to Canada as the 51st state were wake-up calls for Canada’s national security. Last year, applications to the Canadian Armed Forces nearly doubled to 40,000 from the previous year. Also, Canada increased its military spending to 2% of its GDP last year, even though it is far short of NATO’s 5% target. Canada needs to raise pay for its military personnel, expand its troop size, and modernize weapons, equipment, and facilities to live up to the new reality.

Read the article and learn why Canada is building up larger military forces.

https://www.bbc.com/news/articles/crrpd1pvgkzo

Topic Reading-Vol.5147-5/28/2026

Dear MEL Topic Readers, 

From AI to interceptors, Ukraine is trying to drone-proof its skies

The US’s Patriot missile system was originally developed in the 1980s as an anti-aircraft defence system, and it has evolved into an anti-missile defence system. Though it costs a few million dollars per shot, it is a reliable, cost-effective air defense system against more expensive ballistic missiles or aircraft. But during the prolonged Russian invasion of Ukraine, the tools and cost of air attack and defense have changed quite significantly. As hundreds of drones fly hundreds of kilometers beyond borders and attack buildings and facilities, Ukraine is now operating a sophisticated, economical layered air defence system. Using radars, sensors, video feeds, and artificial intelligence, Ukrainian forces can now detect and intercept Russian drones with 3D-printed interceptor drones, each of which costs just a few hundred to one thousand dollars. Also, remote machine guns controlled by trained civilians are used to shoot down drones as the last line of defence. Indeed, since drones are economical, mass-producible, expendable, effective, and upgradable, Ukraine is now the frontrunner in modern air defence technologies.

Read the article and learn how Ukrainians have been thriving in the war since 2022.

https://www.bbc.com/news/articles/c1k2lmmjvzxo

Topic Reading-Vol.5146-5/27/2026

Dear MEL Topic Readers,　

Japan is gripped by mass allergies. A 1950s project is to blame

When you visit Japan in early spring, you’ll find many people wearing masks, just like most people in the world did during the COVID pandemic. Are the Japanese still worrying about a contagious virus or the flu? You may also realize that many people show classic allergy symptoms, including watery eyes, frequent sneezing, and rubbing their itchy faces. Yes, pollen allergies have become a national health issue in Japan, and over 40% of the Japanese are estimated to suffer from hay fever symptoms. In fact, nearly 70% of Japan’s land is covered with forests, and around one-third of the forest area consists of sugi (cedar) and hinoki (cypress) plantations. They were planted to cover the barren mountains after World War II, under the massive afforestation project seven decades ago, in the hope that these fast-growing evergreen species would reforest landscapes quickly and provide wood for construction. The problem is that they also produce large amounts of lightweight pollen around the same time, especially after 30 years of plantation. ENT doctors and drug stores are very busy during the season. Also, wild monkeys in the mountain forests and even domesticated pets are seen suffering from hay fever symptoms. Reforestation projects with diverse or pollen-free cedar are underway while more people of all ages are sneezing and rubbing their itchy eyes during the high season.

Read the article and learn why so many Japanese people suffer from hay fever symptoms.

https://www.bbc.com/future/article/20260515-the-1950s-blunder-which-causes-mass-hay-fever-in-japan

Topic Reading-Vol.5145-5/26/2026

Dear MEL Topic Readers, 

Why is being a mother so expensive in the United States?

Medical care and childcare are both expensive in the US, and the price tags vary widely by insurance coverage, hospital and doctors, and location. While over 90% of expectant mothers are covered by some form of insurance, including public programs, how much of the medical bills are paid by the insurer varies. Also, if you don’t use the hospital, physicians, or pharmacy that have agreed with your insurance plan, called “in network”, you are charged the full sticker price. For example, average insurance claims are over $20,000 for virginal and more than $25,000 for C-section birth in wealthy states like New York and California, and most or some of the claim is covered by the insurer. But the cost doubles if the medical services are provided by an “out-of-network” hospital or doctor. As for paid maternity leave, the US is the only high-income country that does not have a national paid leave program, though some “blue states” have their own programs. When it comes to childcare, US parents bear as much as 40% of their disposable household income on average, while couples in other developed countries pay less than half. If you take recent inflation into account, the cost of medical and child care in the US may be unbearably high for many mothers and parents. 

Read the article and learn how expensive to become a parent in the USA.

https://www.aljazeera.com/news/2026/5/10/why-is-being-a-mother-so-expensive-in-the-united-states

Topic Reading-Vol.5144-5/25/2026

Dear MEL Topic Readers, 

‘We don’t sell loneliness’: Solo dining is more popular than ever, much to the distaste of some restaurants

While hotels and airlines welcome and accommodate solo travelers happily, many restaurants are reluctant, or even reject, to serve solo diners, especially during busy hours. That’s because their revenue is structured mostly by per-room, per-seat, and per-table revenues. Also, in many cultures, as meals are meant to be shared, such as Chinese hot pot, Korean BBQ, and Spanish paella, restaurants arrange tables for parties. However, according to an online table-booking site, solo diners increased nearly 20% last year, and spent more money per person. Indeed, lone diners are no longer a puzzle piece to fill up empty space, but also growing business opportunities for restaurants. For example, a Korean version of Google Maps offers a filter to search for solo-diner-friendly restaurants. Also, more restaurants are rearranging seating space to accommodate single customers with counter tables, like fast-food restaurants in Japan. Maybe it’s time for restaurants to reconfigure their business models from per-table to per-seat and their menus to welcome and please more single customers.

Read the article and learn what lone diners could mean to restaurants.

https://edition.cnn.com/travel/solo-dining-global-popularity-rising