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2022-06-18 15:43:37 What is the map of the world according to population density?

Based on the data from the Gridded Population of the World collection (GPWv4) which models human population based on census reports, and the United Nation's World Population Prospects report, here is ‘The Humanity Globe' - an awesome visualization showing the world according to population density.

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2022-06-17 07:30:00 How many hours of sleep are people losing because of climate change?

Danish researchers analyzed data from sleep-tracking wristbands used by 48,000 people in 68 countries between 2015 and 2017.

They then paired the sleep data with local weather data, revealing that unusually hot nights are causing people to fall asleep later, rise earlier and sleep less.

The evidence suggests that people are losing an average of 44 hours of sleep each year.

By 2100, the researchers estimate people will lose 58 hours of sleep a year if emissions go unchecked. In a lower-emissions future, the figure drops to 50 hours.

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2022-06-16 07:30:02 How could a prehistoric domestic dog look like?

The Muge dog is one of the oldest almost complete dog skeletons recovered from the Muge shell middens, Portugal, in the 19th century.

Using modern technologies that take into account combined anatomical, veterinary, zooarchaeological, artistic and graphic aspects, researchers managed to to reconstruct the Muge dog’s head appearance.

The importance in reconstructing the face of one of these Mesolithic dogs is its antiquity (c. 7600 years cal BP), its completeness (almost complete skeleton) and its burial context, e.g. found within a human burial ground, at a depth of 4 m. The dog skeleton was very well preserved, likely meaning that it was buried by humans with care, which is interpreted as a strong emotional bond between humans and their dogs.

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2022-06-15 07:30:01 Which dog breeds have the lowest life expectancy?

According to the above mentioned study, flat-faced breeds such as French Bulldogs and Pugs have some of the lowest life expectancies.

French Bulldogs had the lowest life expectancy at birth (4.53 years). This is approximately three years less than other flat-faced breeds that showed low life expectancies at birth including English Bulldogs (7.39 years) and Pugs (7.65 years).

The authors believe that such a short life expectancy could result from the high health risks known to occur in these flat-faced breeds.

As far as some practical results of this research are concerned, the authors conclude their work now enables dog life expectancies to be tracked at different ages, similarly to humans, and may improve predictions for different breeds. There could also be other practical benefits such as helping dog shelters to provide accurate estimates of a dog’s remaining life expectancy during rehoming.

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2022-06-14 08:30:02 Which dog breeds live longest?

In a new study, scientists analysed 30,563 records of dog deaths from veterinary practices across the UK between 2016 and 2020 using the VetCompass database. The figures were categorised into 18 dog breeds recognised by the Kennel Club and also a group of crossbreed dogs.

Jack Russell Terriers had the highest life expectancy at birth (12.72 years), followed by Yorkshire Terriers (12.54 years), Border Collies (12.10 years), and Springer Spaniels (11.92 years).

Across all dog breeds, the average life expectancy at age 0 for male dogs was 11.1 years, four months shorter than the estimate for female dogs.

Dogs that had been neutered had a higher life expectancy (11.98 years for females and 11.49 years for males) than those that were not neutered (10.50 years for females and 10.58 years for males).

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2022-06-07 07:30:01 What are the largest existing water parks?

Chimelong Water Park in China , occupying the area of 182 hectares, is by far the largest outdoor water park to date. It has the largest wave pool and the longest lazy river and in some previous years was visited by more than 2,600,000 people.

The world’s record of the largest indoor water park is held by the Tropical Islands Resort, located in the former Brand-Briesen Airfield in Halbe, Germany . The 650-hectare (1,606-acre) site was developed inside what was formerly an airship hangar known as the Aerium. It is also the fourth-largest building in the world by usable volume. Tropical Islands has a maximum capacity of 8,200 visitors a day.

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2022-06-06 07:30:01 What was the first purpose-built water park?

After the World War II water slides progressively became one of the popular features in different amusement parks.

In the 1970s, George Millay, who famously founded Sea World in San Diego and later Florida, decided to build up on the idea and create a purpose-built water park that would be profitable.

He needed a warm, year-round place to have such a park to keep revenues steady. Orlando, Florida in the , already hosted well-known amusement locations, enjoyed an existing tourist market, and had the weather that Millay needed.

This allowed Wet n’ Wild to be founded there as the first purpose-built water park in 1977.

The first year was financially disappointing, but Millay did not fret, and from the following year, it began to make profit.

Although the park closed in 2016, it became the blueprint for most other parks in the world.

Also in 1977, in Switzerland a water park Alpamare with some indoor facilities was opened.

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2022-06-05 17:19:21 Where was the first water slide built?

It’s summer time in the Northern hemisphere, and millions of people all around the world are enjoying water parks.

In this context let’s recall some facts on the subject.

The water slide is the key element of every water park.

The first water slide appears to have first developed in New Zealand during the 1906 International Exhibition.

In an exhibition called "Wonderland," a chute was installed allowing swimmers to slide right into the pool.

The chute moved people down in a wooden ramp that then allowed them to briefly skim across the surface of the water as it came in a slight angle.

In fact, almost all early water slides mostly skimmed the riders rather than directly inserted them into water.

In the 1910s and 1920s, similar slides were created, with most being features at fairs and special summer events.

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2022-06-04 08:42:37 How the “happy hormone” can impact our social interactions?

Dopamine is a chemical messenger - often known as the 'happy hormone' - that carries signals controlling mental and emotional responses in the brain.

In a new study, scientists showed that manipulating the levels of dopamine affected emotion recognition, which is fundamental to our everyday social interactions.

More specifically, the research showed that while people with low baseline levels of the chemical messenger became better at emotion recognition after receiving a dopamine boost, those with higher baseline levels actually became worse.

These findings suggest that dopamine may influence emotion recognition via its effects on temporal processing, providing new directions for future research on typical and atypical emotion recognition.

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2022-06-01 07:30:01 What are the most used emojis in the world?

Around 92% of the world’s online population use emojis, according to the Unicode Consortium.

Being not a universal language, some of the 3,663 emojis appear far more often than others.

The crossword-Solver team analyzed 9 million geotagged tweets to see which emoji each country uses the most.

They turned this data, retrieved during the last two weeks of February 2022, into maps of the world to chart emoji usage across the globe.

Key Findings:

Most countries are either laughing or loving as face with tears of joy and red heart are the first and second most used emojis worldwide.

Face with tears of joy is the most common emoji in 75 countries.

Wordle-themed emojis find their way into top ten most-used emojis in many Anglo-Saxon countries.

Emojis are not a universal language. In China the clapping hands emoji suggests "making love", while sending thumbs up to a Greek may cause offence.

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