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Past events of global warming caused mass extinctions of people

Past events of global warming caused mass extinctions of people 86

Scientists warn that the Earth is currently experiencing a sixth mass extinction, and each of the five previous incidents has had a profound impact on biodiversity, evolution, and species restoration.

Species are declining at an unprecedented rate, but this is nothing compared to the stunning losses experienced by coral reefs around the world due to rising acidity and ocean temperature.

By looking at past extinction events, including which species were most prone to extinction and how coral reductions led to extinction, we can get a better idea of ​​what to expect in the coming years if climate change and the sixth extinction are not stopped.

Past events of global warming caused mass extinctions of people 87

Researchers led by the University of Leeds conducted a study to model two large-scale mass extinctions, the Late Triassic and the early Toarcian, during periods of global warming, in order to understand the role of climate in species loss.

The study was published in the journal Proceedings of the Royal Society B.

Later, the Triassic extinction (LTE) occurred 201 million years ago, and the early Toarcian (EToE) – 187 million years ago.

Previous studies have shown that warming periods that are associated with bursts of volcanic activity during these extinction events only contributed to the already existing extinction rates. However, the researchers found that this is not so.

“The events of the Late Triassic and early Toarcian extinction are associated with climate warming caused by mass volcanism,” the researchers write in their study.

The group used the global marine organisms database to model extinction selectivity across the Late Triassic and early Jurassic.

Researchers found that LTE and EToE each had their own unique patterns of selectivity and extinction rate, along with some similarities in which marine species were most vulnerable to climate change and extreme warming.

”Not only LTE and EToE events represent an increase in the extinction intensity above the corresponding background indicators of the Triassic and Jurassic period, but, more importantly, and contrary to previous statements, there are differences in the selectivity of extinction between the times of both background and mass extinction, as well as between the Triassic and Jurassic intervals in general, “the researchers conclude in their study.” It is also obvious that the background extinction was higher in the Late Triassic, before the onset of LTE hyperthermia, than at the beginning of the Jurassic, after the extinction. ”

Since these two mass extinctions are associated with increased greenhouse gas emissions and ocean temperature, the study provides the necessary basis for measuring future extinctions and warns of potential threats to climate change.


Planet Earth

Polar vortex: “wild” winter is coming in the US, Northern Europe and East Asia after the 16th of January

Polar vortex: "wild" winter is coming in the US, Northern Europe and East Asia after the 16th of January 100

In the upper atmosphere above the North Pole, experts saw a rapidly swirling vortex of cold air that could bring severe frosts to the United States, Northern Europe and East Asia. Serious cold snap and snowy weather are expected after January the 16th.

Snowfalls and a cold snap hit South Korea since the start of 2021, hitting historic snow maximums and temperatures. In the country, for the first time since 1964, television and newer communications are sending people cold snap warnings:

The situation is similar in Japan, where a new snow storm hit historic highs:

On January 7, the thermometer In Beijing dropped to -20 degrees Celsius, breaking the 1966 record. In other regions of China, the temperature is also not sugar, and you can only move around in special uniforms:

The cold even reached Taiwan, where the temperature in some areas dropped below freezing point, snow poured down and people realized that rice terraces can be used as a ski jump:

Even more snow went to Spain, where on January 6, 2021, a temperature of -34.1 ° C was recorded – the lowest on record. After that, a snow storm hit the country, which has not been seen for 80 years:

The same thing happens in Canada and in the northern states of the United States:

It seems that after a stratospheric warming, the subpolar vortex began to split:

The vortex itself is a standard phenomenon. However, this time experts were surprised at his movement. It is possible that in the near future it will be divided into two parts. 

Scientists associate the strange behavior with the changed climate in the Arctic, which has become warmer. From September to December, the amount of ice cover decreased significantly.

The polar vortex is a low-pressure region located in the stratosphere and filled with cold air. When the jet stream of air that holds the vortex weakens, the low pressure area moves south. 

As the ice shrinks, more moisture will move inland. It will turn to snow, so snowfalls are expected. Snow, in turn, reflects heat, leading to a cold snap.

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Planet Earth

Hospital in Naples was evacuated after a new, huge sinkhole appeared

Hospital in Naples was evacuated after a new, huge sinkhole appeared 101

Eyewitnesses said they heard a loud crash at dawn when a huge hole in the ground formed outside the Ponticelli Ospedale del Mare hospital in eastern Naples.

Early in the morning of January 8, 2021, a sinkhole occurred in the parking lot of a clinic in Naples. The depth of the formed cavity is about 20 meters, the total area of ​​the hole is about 2,000 square meters.

No casualties were found at the scene; firefighters say the sinkhole “affected an area of ​​about 500 square meters” and engulfed several cars parked near the hospital.

As the press writes and as a little can be seen from the videos, rescuers and firefighters were running around the pit together with the governor of the area.  But who should be there in the forefront are Italian geologists, since Naples stands in the very center of the volcanic system known as the Phlegrean Fields.

If the surface collapsed, moreover – the surface reinforced with concrete and reinforced from below with some kind of communications, then we are talking about serious soil deformations caused by the activity of magma.

Italy has been in doubt since the summer of 2020, because swarms were observed there in very atypical places in May, and according to the forecasts of old Italian seismologists, who had witnessed many strong earthquakes, it should have boomed in the August region.

Fortunately, nothing bad happened to Italy and there was no big earthquake. But, since there are swarms, it means that something is being prepared, the magma is gathering strength. 

Following this particular sinkhole event – an obvious sign that a major earthquake in Italy is already very close.

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Planet Earth

A new great pandemic cycle has begun (again) in China

A new great pandemic cycle has begun (again) in China 102

In the first months of 2020, the whole world with a certain fright followed the events unfolding in China, where people fell on the streets during the day and astronauts wandered, and in the evening crematoria began to smoke. And now, with the onset of December, the cycle seems to be repeating itself.

Shunyi area in Beijing, where the authorities announced “wartime status” the day before. As you can see in the videos, thousands of people are lined up in the queue for mandatory testing:

Dalian city, where “wartime” is also declared. Neighborhoods are blockaded, people are walled up in entrances, familiar characters of George Lucas roam the streets:

Chinese ‘rescuers’, before performing a combat mission:

Chengdu City:

Daluo Port, Yunnan – tourists came for adventure and they received the ‘time of their life’ after leaving the ramp:

If something happens in Beijing, it does not mean that tomorrow the same will happen everywhere. However, the trend towards such dynamics is observed and, as the practice of the first wave of the pandemic has shown, all countries and people, to one degree or another, have taken into account the ‘Chinese experience’. 

Therefore, one must think that everything will now be in peace, as in spring – a new global round of the fight against the Covid has begun in China, a new great pandemic cycle!

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