Well it really depends on who you consider to be a researcher and the are ALOT
No, modern scientists do not understand everything about the world. There are still many mysteries and unanswered questions in various fields of science that researchers are actively working to uncover. Scientific knowledge is constantly evolving and expanding as new discoveries are made.
Those who investigated problems related to the understanding of the natural world were typically called scientists or researchers.
The researchers sent a submarine deep into the ocean to learn more about the life there.
"Researchers" is not a verb; it is a plural noun referring to people who conduct research.
stopping the spread of many diseases
Many researchers fix the results to fit their thesis.The world is very corrupt.
researchers at the headquaters of the down syndrome capital of America, predict that the population of downers exceeds 12 billion
Researchers say that there are none left but I think/hope there are still some that are not noticed.
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The researchers are trying to see how many there are, but won't give us an estimate. But they do think the manatee populaton is increasing.
From many researchers traveling around the world to answer this specific question, they have observed from surveys & technology sent from researcher to researcher that Paris is the most beautiful (but yet expensive) place in the world.
Researchers have said between 22 000 and 40 000 polar bears are around the world, None are listed as endangered.
Researchers get it from the World Meteorological Organization. They gather the information and make it simpler to read for all countries, then they distribute the information to whomever needs it.
Humans are all over the world. There are even researchers living in Antarctica.
Many researchers believe that adult styles of romantic love correspond with childhood patterns of attachment.
It is difficult to accurately estimate the global sloth population. However, researchers believe there are around 4,000 to 4,800 sloths in the wild.
According to AAAS, there were 5.8 million science and engineering researchers in 2006. Look up (Link Moved). Their source is OECD, which might have later data.