"Ancient Inventions and Discoveries that Changed the World."
The course of human history has been shaped by inventions and discoveries that marked milestones in their time and whose legacy continues to influence our lives today. Below, we will explore some of the ancient inventions and discoveries that had a lasting impact on humanity.
1. Writing (C. 3500 B.C.)
One of the most revolutionary inventions of antiquity was writing. In Mesopotamia, more than 5,000 years ago, the Sumerians developed cuneiform writing, using clay tablets to record information. This allowed the accumulation and transmission of knowledge, creating the basis for education and written communication that we still use today.
2. The Wheel (C. 3500 B.C.)
The wheel is considered one of the most influential inventions in the history of mankind. It originated in ancient Mesopotamia, and its invention enabled significant advances in transportation and machinery. The wheel became an essential part of the technology that transformed agriculture, manufacturing and trade.
3. Gunpowder (9th century)
Gunpowder, invented by the Chinese in the 9th century, was a discovery that changed the face of warfare and military technology. It would also be used in the creation of fireworks and eventually in civilian applications, such as mining and infrastructure construction.
4. The compass (11th century)
The compass was invented in China during the Song dynasty in the 11th century. This revolutionary device enabled accurate maritime navigation, leading to the age of discovery and global trade, changing the way the world was connected.
5. Gutenberg's movable type printing press (1440)
The invention of the movable type printing press by Johannes Gutenberg in the 15th century was a key breakthrough in the history of communication. It facilitated the mass production of books and the dissemination of knowledge, paving the way for the Scientific Revolution and the Protestant Reformation.
6. Copernicus' heliocentric theory (16th century)
Nicolaus Copernicus presented the heliocentric theory in his work "De revolutionibus orbium coelestium" in the 16th century. By proposing that the Earth orbits the Sun, he revolutionized astronomy and changed our understanding of the solar system.
7. The microscope (17th century)
The development of the microscope in the 17th century allowed scientists to observe and study microorganisms and cells for the first time. This laid the foundation for microbiology and modern medicine.
8 Telegraph:
The telegraph, invented in the 19th century, allowed the transmission of messages over long distances using electrical signals and a specific code, such as Morse code. Although it did not transmit voice, it laid the foundation for long-distance communication.
Optical telegraph: Before the electric telegraph, devices such as the optical telegraph, which used visual signals, such as flashing lights, to communicate over long distances, were used. This system was used in the 18th and early 19th centuries.
6.935.889 Coronavirus disease (COVID-19) is an infectious disease caused by the SARS-CoV-2 virus. Most people infected with the virus will experience mild to moderate respiratory illness and recover without requiring special treatment. However, some will become severely ill and require medical attention.
Older people and those with underlying illnesses, such as cardiovascular disease, diabetes, chronic respiratory disease or cancer, are more likely to develop severe illness. Anyone, of any age, can contract COVID-19 and become seriously ill or die.
What did the experts tell people around the world to do and not to do in the face of covid 19?
affirmative phrases :
1) Experts recommended washing hands frequently and for at least 20 seconds to prevent the spread of Covid-19. 2) People were advised to keep a physical distance of at least one meter from other people to reduce the risk of infection. 3) Experts recommended wearing masks in public to help prevent transmission of the virus. 4)) People were advised to avoid touching their faces to reduce the risk of infection. 5) People were advised to stay home if they feel sick or have symptoms of Covid-19 to avoid spreading the virus.
Negative phrases:
1) Experts advised against mass gatherings and events due to the high risk of virus spread.
2) People traveling to areas of high Covid-19 incidence were discouraged, especially if they are of advanced age or compromised health.
3) Experts advised against the use of unapproved drugs to prevent or treat Covid-19.
4) The use of hand sanitizers containing less than 60% alcohol was discouraged, as they may not be effective against the virus.
5) People were discouraged from sharing personal items such as towels, kitchen utensils or toothbrushes to reduce the risk of infection.
Natural disasters sometimes exacerbated by climate change such as hurricanes, earthquakes, droughts and floods have affected 152 million people across the region since 2000.
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Latin America and the Caribbean is he second region most prone to natural disasters in the world, says a new report from the UN Office for Humanitarian Affairs released this week.
Since 2000, 152 million Latin American and Caribbean people have been affected by 1,205 disasters, including floods, hurricanes and storms, earthquakes, droughts, landslides, fires, extreme temperatures, and volcanic events.
From 2000 to date, the region has faced an average of 17 hurricanes per year
and 23 of them have been category 5.
According to the UN, storms affecting Central America and the Caribbean are becoming more powerful and produce increased rainfall and storm surge due to climate change.
More frequent and intense storms in the region mean that there is less time for recovery between events, as the case of Dominica attests.
The country was still recovering from the impact of Tropical Storm Erika in 2015 when in 2017 it was completely devastated by Hurricane Maria, which killed 64 people and affected the entire estimated population living on the island, some 71,293 people.
In the last 20 years, the countries most affected by storms in the region have been Cuba, Mexico and Haiti with 110 storms, 5,000 deaths, 29 million people claimed and $39 billion in total damages.
It is important to note, however, that more than 85% of these deaths occurred in Haiti, the poorest and most vulnerable country in the Caribbean.
Colombia is a country located in a seismic region, where landslides, floods and hurricanes also occur frequently. Some of the most common natural disasters affecting Colombia are:
Earthquakes: Colombia is located in the so-called "Pacific Ring of Fire", an area of high seismic activity. In recent years, several earthquakes of significant magnitude have been recorded, such as the Popayán earthquake in 1983 and the Armenia earthquake in 1999. Earthquakes can cause significant material and human damage, including loss of life.
Landslides: Heavy rains can cause landslides in Colombia's mountainous areas, especially in the Andean regions. These landslides can cause significant material and human damage, including loss of life.
Flooding: Torrential rains can cause flooding in low-lying areas of Colombia, and especially in coastal regions. Floods can cause significant material and human damage, including loss of life, destruction of homes, and interruption of basic services such as water supply and electricity.
Hurricanes: Although hurricanes are not very common in Colombia, they can affect the northern coast of the country. Hurricanes can cause significant material and human damage, including loss of life, destruction of homes, and interruption of basic services.
" THE CONSEQUENCES OF THESE NATURAL DISASTERS"
The consequences of these natural disasters can be devastating for the affected communities.
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In addition to the loss of life and destruction of homes and property, these disasters can have a significant impact on the country's economy and infrastructure.
Affected communities may suffer food and water shortages, and may face difficulties in accessing basic services such as health care and education. It is therefore important for authorities and communities to be prepared to deal with these situations and to take preventive measures to minimize the impact of these disasters.