Cause the Earth suddenly cooled 13,000 years ago

Cause the Earth suddenly cooled 13,000 years ago

Ancient sediments in the cave Hall, Texas, indicate that volcanic eruptions are most likely the cause of the Earth's sudden drop of 3 degrees Celsius about 13,000 years ago, Science Daily reported on July 31. This cooled Earth event is called Younger Dryas. Michael Waters, director of the Center for Native American Studies and professor at Texas A&M University, and colleagues from Baylor University and University of Houston publish new research in the journal Science Advances.

Why are mice always selected in experiments?

Why are mice always selected in experiments?

In a series of scientific research experiments, from drug trials, vaccines ... mice were always selected. Why so? (Department) Good question, in terms of research in Medicine in general, before a drug is tested or used on humans, we need to have complete records of the effectiveness and safety of the drug. To test the effectiveness and toxicity of drugs or vaccines we need to test on animal models first. The mouse is not the only model but the most popular / used model in laboratories in the world because it is a good reconciliation model between two key elements: Biological simulation, Budget. and Ethics:

The nCoV ancestor has been in bats for 70 years

The nCoV ancestor has been in bats for 70 years

To understand where nCoV comes from and how it is transmitted to humans, researchers need to trace its evolutionary history through the viral genome, encoded in ribonucleic acid (RNA). But the evolutionary history of nCoV is complicated by corona viruses that frequently exchange genetic material with each other. That exchange, called genetic recombination, makes it difficult for researchers to determine how nCoV is initially transmitted to humans. Some researchers think that nCoV is spread directly from bats to humans while others hypothesize that it is transmitted by intermediate hosts such as pangolins.

Shocking news: Thunder has a characteristic smell

Shocking news: Thunder has a characteristic smell

Who in the world did not see how thunder happened. But did you know that this magnificent natural phenomenon also creates an extremely characteristic odor? Perhaps many people do not know, thunder can create a very characteristic scent. It's quite subtle and gentle, but special, and maybe you've smelled it without knowing it.

What is thunder? Why is there thunder?

What is thunder? Why is there thunder?

A particularly common natural phenomenon occurring everywhere on our earth is thunder. It is an extremely powerful current and is ready to destroy everything it launches. Rainstorms, dark clouds in the sky followed by the maximum of lightning discharges of lightning between the clouds, always waiting for the right place to create a launch pad to the ground where people are living. That is thunder.

Wreck more than 400 years old under the city

Wreck more than 400 years old under the city

SWEDEN The old ship was likely a 30-meter long Samson cargo ship, abandoned in the early 17th century and buried under garbage. Experts at the archaeological company Arkeologikonsult announced the wreck discovered in Kundstradgarden, Stockholm, last summer. The results of the wood analysis show that the ship was built in the 1590s. It used to operate on Stockholm's old waterways. These roads were later filled to serve the expansion of the city.

Set up a bank to store the "legacy tape samples" of the world

Set up a bank to store the "legacy tape samples" of the world

An international group of iceologists is taking samples of "legacy ice" at Mount Mont Blanc (the highest mountain in Western Europe), to set up a world bank to store ice samples stored in Antarctica, for future scientific research programs. The drilling of samples has begun since August 15 and will end in early September.

Facebook's giant data center in the Arctic Circle

Facebook's giant data center in the Arctic Circle

Mark Zuckerberg, Facebook CEO, shares rare images of the Lulea high-tech data center in northern Sweden, 112km from the North Pole. Servers in data centers often operate continuously and emit huge amounts of heat. Therefore, Facebook chose to place its data center in locations like the mining town of Lulea, where the lowest temperature could reach -40 degrees Celsius in the winter. This center is the "backbone" of Facebook in Europe.

There will be the world's largest marine reserve in Antarctica

There will be the world's largest marine reserve in Antarctica

The project to establish a protected area was agreed on October 28 in Australia, within the annual meeting of the Antarctic Marine Ecology Conservation Commission (CCAMLR). This is a project initiated by the US and New Zealand. According to the project, the reserve is located in the Ross Sea area in Antarctica, extending to 1.55 million km2, of which 1.12 million km2 is a prohibited fishing area.