Stem cells are undifferentiated cells found inside the body and have the capability of generating lineage-specific cells. Neurons are different from other cells in our body because they don't undergo mitosis and division after determination and differentiation.
Science has not necessarily failed the human race. It is the politics behind new discoveries that fail the human race, not science itself. We have advanced our technology because of the way we work on scientific discoveries. Ever since the invention of iron for swords, the human race has steadily invented other ideas. Science is something we all need to understand. It might yet cure the human race from our sufferings. Scientific advances such as the discovery of insulin helped talented type-1 diabetics remain in the gene pool when before 1920, people just slowly wasted away.
So I read an article a while ago which interested me immensely, and this article was about how a bacteria in the sixteenth century might've wiped out 80 percent of Mexico's population, for comparison, the Black Death wiped one-third of Europe's population while this wiped four-fifths of Mexico.
I’ve come to the conclusion that climate change happens all over the planet, not just at home in the United States. The Australian Great Barrier reef is constantly affected by climate problems. The Gobi Desert in Northern China may have rare animals such as snow leopards, and Bactrian Camels, (two-humped camels), but the desert keeps growing.
Soil degradation means that soil is not being used to its fullest potential for agricultural use. (Source) This is because soil degradation is becoming a massive problem on this planet. The soil is a fundamental national resource, as the basis for all life on this planet. There is a huge problem on this planet right now with soil management on the forefront. The problem is a decline in soil fertility. There is also a problem with erosion as well as adverse changes in salinity. Water, wind, salinity, loss of organic matter, and more are the cause of soil problems. This can happen in other countries besides the United States.
Groundwater depletion is a growing problem on this planet today. It comes from, as usual, humans overusing their ability to draw groundwater out of our environment. Surface water is not always easily accessed in the United States. Groundwater is the source of drinking water for half the total population and nearly all of the rural population. (Source) Groundwater depletion simply means that excessive of groundwater is a key situation that needs to be addressed more. Groundwater depletion will create wells that dry up since waters and lakes have less water in it when the water is siphoned. The water quality is not as good as it needs to be because there are increases in pumping costs when there is a sinking in the earth's surface.
Earth has had multiple mass extinctions. It will keep happening as a natural evolutionary cycle or perhaps because of the activities of man. The Endangered Species Act was set up in 1973 to save us from ourselves because, since the beginning of the 21st century, we have lost 17 animal species. For example, the Pinta Island Tortoise on June 24, 2012, whose ultimate survivor named Lonesome George, died at over 100-years-old. If we do not curb greenhouse gas emissions, we will cause more extinction.
Apparently, there already are two different types of biodegradable plastic on the market that we need to start introducing into manufacturing. These are known as oxo-biodegradable, (oxygen) and hydro-biodegradable (hydrolysis), both types emit
Denial is not just a dried up river in Africa. Earth has cooling periods also known as Ice Ages and warming periods, such as the global warming that occurs in 2018. There is much evidence of the existence of global warming. Shells in glacial deposits help scientists decide a “maximum age for the glacier advance.” These shells had been preserved for 14,000 years because of being well preserved. In the past, Britain and Ireland’s winters were very cold. This was in the remote past. Global warming is surely influenced by human activity but it is also part of a natural cycle of weather on this planet.
Air pollution does a lot of harm to city infrastructure all across the United States. Air pollution exists in an invisible state that not everybody can see. But it certainly affects your breathing. According to epa.gov, there are six common types of air pollutants. Cars are only one source of pollutant emissions along with planes, ferries, and trains. It is a little-known fact that death can be caused by air pollutants known as “fine particle matter (PM22.5)” which can cause premature death and harmful effects on the cardiovascular system” as well as other systems such as inflicting asthma on the respiratory system.