Early humans left stone tools, pottery, and jewelry that are particular to various regions and times.
Humans are capable of fully bipedal locomotion, thus leaving their arms available for manipulating objects using their hands, aided especially by opposable thumbs.
Humans are one of only six groups of animals to pass the mirror test—which tests whether an animal recognizes its reflection as an image of itself—along with chimpanzees, orangutans, dolphins, and possibly pigeons.
Mind is a concept developed by self-conscious humans trying to understand what is the self that is conscious and how does that self relate to its perceived world.
The oldest fossil evidence for modern humans is 130,000 years old in Africa and sometime before 90,000 years old in the Near East (Smithsonian 2007a).
Artifacts such as fish hooks, buttons, and bone needles begin to show signs of variation among different population of humans, something what had not been seen in human cultures prior to 50,000 BP.
Helpless at birth, humans continue to grow for some years, typically reaching sexual maturity at 12 to 15 years of age.
At least ten thousand years ago, humans developed agriculture (see rise of civilization below), which has substantially altered the kind of food people eat.
The name Homo sapiens is Latin for "wise human" or "knowing human," emphasizing the importance of intelligence in separating humans and other animals.
Humans under the age of 2 typically fail this test (Palmer 2006).
Humans have had a dramatic effect on the environment.
Humans generally view themselves as the dominant species on Earth, and the most advanced in intelligence and ability to manage their environment.
Within the last few decades, humans have explored Antarctica, the ocean depths, and space, although long-term habitation of these environments is not yet possible.
Humans have extended parental care, and pass on many attributes socially to their young.
Humans are inherently social animals, like most primates, but are particularly adept at utilizing systems of communication for self-expression, the exchange of ideas, and organization.
Spiritually, humans have historically formed religious associations, characterized by belief in God, gods, or spirits, and by various traditions and rituals.
The capacity humans have to transfer concepts, ideas, and notions through speech and writing is unrivaled in known species.
Life in space has been very sporadic, with no more than thirteen humans in space at any given time.
Some humans have chosen to abstain from eating some or all meat for religious, ethical, ecological, or health reasons.
Humans also are noted for their desire to understand and influence the world around them, seeking to explain and manipulate natural phenomena through science, philosophy, mythology, and religion.
Humans are variously said to possess consciousness, self-awareness, and a mind, which correspond roughly to the mental processes of thought.
Humans, on the other hand, form monogamous pair bonds and have extensive parental care, raising their young in families where both parents educate the youngsters.
Humans started to bury their dead carefully, made clothing out of hides, developed sophisticated hunting techniques (such as pitfall traps, or driving animals to fall off cliffs), and made cave paintings.
The scientific study of human evolution concerns the emergence of humans as a distinct species.
Humans are notable for practicing altruistic behaviors not only towards relatives, but also others, including sometimes enemies and competitors.
Humans also have a marked appreciation for beauty and aesthetics, and can use art, music, and literature to express concepts and feelings.
The prospect of death causes unease or fear for most humans.
Humans are placed in the family Hominidae, which includes such apes as chimpanzees, gorillas, and orangutans, as well as including such close, extinct relatives as Australopithecus, Homo habilis, and Homo erectus.
Language, involving syntax and grammar, is one notably unique characteristics of humans.
Between 1969 and 1972, two humans at a time spent brief intervals on the Moon.
Still, when humans function in civilized tandem, it has been noted that uninhibited acting on extreme emotion can lead to social disorder and crime.
The view of humans as omnivores is supported by the evidence that both a pure animal and a pure vegetable diet can lead to deficiency diseases in humans.
Apes consist of the various species of gibbons (or "lesser apes"), as well as gorillas, chimpanzees, bonobos, orangutans, and humans (collectively referred to as the "great apes").
New humans develop viviparously (live birth) from fertilization of an egg by a sperm (conception).
The human brain is the center of the central nervous system in humans, as well as the primary control center for the peripheral nervous system.
Historically, a major source of controversy has been the process by which humans have developed, whether by physical forces with an exclusively random component (natural selection) or by the creative force of a Creator God.
Based on purely biological aspects (morphology, DNA, proteins, and so on), it is clear the humans are primates.
Like other mammals, humans have an XY sex-determination system, so that females have the sex chromosomes XX and males have XY.
One argument for this suggested reclassification is that other species have been reclassified to belong to the same genus on the basis of less genetic similarity than that between humans and chimpanzees.
Humans share with other primates the characteristics of opposing thumbs, omnivorous diet, five fingers (pentadactyl) with fingernails, and binocular, color vision.
The term falls outside the usual naming conventions for early humans and is used in a general sense to describe the oldest modern people in Europe.
Socrates gave the (doubtlessly tongue-in-cheek) definition of humans as "featherless bipeds" (Plato, Politicus).
Many religious hold that the most essential characteristic that makes humans unique is an immaterial essence: A soul, spirit, atman, qi, or so forth.
Problems for humans living in cities include various forms of pollution and crime, especially in inner city and suburban slums.
By present estimates, humans have approximately 20,000–25,000 genes.
Humans have self-awareness, can reason abstractly, are capable of introspection, and appreciate beauty and aesthetics.
Humans are omnivorous, capable of consuming both plant and animal products.
Social interactions between humans have also established an extremely wide variety of traditions, rituals, ethics, values, social norms, and laws that form the basis of human society.
Technology is the objects humans make to serve their purposes.
Listening to music is perhaps the most common and universal form of entertainment for humans, while learning and understanding it are popular disciplines.
From the point of view of some religions, the essential part of humans is the soul, which counters a fixation on physiology and observable physical characteristics alone (O'Campo 2005).
Psychologically, humans have a highly developed brain capable of abstract reasoning, language, and introspection.
The number of centenarians (humans of age 100 years or older) in the world was estimated by the United Nations at 210,000 in 2002 (UN 2002).
Humans belong to the third group of primates, and specifically those primates known as apes.
Language is central to the communication between humans, as well as being central to the sense of identity that unites nations, cultures, and ethnic groups.
Humans are known for forming monogamous pair bonds and for extensive parental care, establishing families of parents and children.
Substantial evidence has been marshaled for the fact that humans have descended from common ancestors by a process of branching (descent with modification) and for a primate origin of humans.
Humans beings also practice altruism, not only for the benefit of an individual's own offspring, or the close relatives, or members of the same social group, but even towards outsiders and competitors or enemies.
Humans are classified in the biological order Primates, a group of mammals containing all the species commonly related to the lemurs, monkeys, and apes.
Human ecology is an academic discipline that investigates how humans and human societies interact with both their natural environment and the human social environment.
Respect for elderly males, codified in human morality as filial piety, is another means by which humans propagate and transmit culture.
Art is one of the most unusual aspects of human behavior and a key distinguishing feature of humans from other species.
Biologists believe that the two species of chimpanzees, Pan troglodytes and Pan paniscus, are the closest living evolutionary relatives to humans.
Technology has allowed humans to colonize all of the continents and adapt to all climates.
The skin pigmentation of contemporary humans is geographically stratified, and in general correlates with the level of ultraviolet radiation.
Society is the system of organizations and institutions arising from interaction between humans.
Up until only around 10,000 years ago, all humans lived as hunter-gatherers (with some communities persisting until this day).
Ask nearly anyone, and you'll hear that bats (although beneficial in insect control) can be dangerous because they carry rabies. But a lesser known danger, and one that is not as easy to avoid, is histoplasmosis. Histoplasmosis is a disease you can get from exposure to bat guano (bat droppings).Mar 3, 2012
How Long Have Humans Been On Earth? While our ancestors have been around for about six million years, the modern form of humans only evolved about 200,000 years ago. Civilization as we know it is only about 6,000 years old, and industrialization started in the earnest only in the 1800s.Jan 19, 2015
HumanHuman Temporal range: 0.195–0 Ma PreЄ Є O S D C P T J K Pg N ↓ Middle Pleistocene – RecentInfraorder:SimiiformesFamily:HominidaeGenus:HomoSpecies:H. sapiens18 more rows
Each sea turtle species uniquely affects the diversity, habitat and functionality of its environment. Whether by grazing on seagrass, controlling sponge distribution, feasting on jellyfish, transporting nutrients or supporting other marine life, sea turtles play vital roles in maintaining the health of the oceans.
The people who travel to or live in Antarctica fall into two main groups, those who live and work on scientific research stations or bases, and tourists. No-one lives in Antarctica indefinitely in the way that they do in the rest of the world. It has no commercial industries, no towns or cities, no permanent residents.
The continents have since repeatedly collided and been torn apart, so maps of Earth in the distant past are quite different to today's. The history of life on Earth began about 3.8 billion years ago, initially with single-celled prokaryotic cells, such as bacteria.
Here are some of the most common and rarest eye colors found around the world.Brown Eyes. With brown-eye people making up more than 55% of the global population, brown eyes are the most common eye color amongst people. ... Blue Eyes. ... Hazel Eyes. ... Green Eyes. ... Silver Eyes. ... Black Eyes. ... Red or Pink Eyes. ... Amber Eyes.More items...
These are the worst case scenarios. Nile and salt water crocodiles are the most dangerous. Not all species attack humans. Many are wary of people and may only bite if they are disturbed or taken by surprise.Jul 21, 2015
On October 4, 1957, the Soviets launched the first artificial satellite, Sputnik 1, into space. Four years later on April 12, 1961, Russian Lt. Yuri Gagarin became the first human to orbit Earth in Vostok 1. His flight lasted 108 minutes, and Gagarin reached an altitude of 327 kilometers (about 202 miles).
Even the largest North American birds—such as the bald eagle, the golden eagle, and the great horned owl—don't commonly attack humans, and can't lift much more than a few pounds. ... It's somewhat more common for eagles and owls to attack small dogs and cats, though this is also fairly unusual.Dec 19, 2012
In many other instances, people were bitten while trying to rescue their free-roaming pet from a coyote attack. Less often, people are bitten by cornered coyotes, or even more rarely, rabid coyotes. There have only been two recorded incidences in the United States and Canada of humans being killed by coyotes.Feb 19, 2015
Neon is a rare atmospheric gas and as such is non-toxic and chemically inert. Neon poses no threat to the environment, and can have no impact at all because it's chemically unreactive and forms no compounds. No known ecological damage caused by this element.
The snow leopard has not been reported to attack humans, and appears to be the least aggressive to humans of all big cats. As a result, they are easily driven away from livestock; they readily abandon their kills when threatened, and may not even defend themselves when attacked.
Some bacteria degrade organic compounds for energy, and without bacteria, the earth would have no soil in which to grow plants. Bacteria living in the gut can help animals break down food. These so-called 'good bacteria' help maintain the conditions necessary for food digestion.Nov 9, 2008
Killer whale attacks on humans. Killer whales (or orcas) are powerful predators capable of killing prey much larger than humans, such as leopard seals and great white sharks. They have also been recorded preying on usually terrestrial species such as moose swimming between islands.
Rat bites and scratches can result in disease and rat-bite fever. Rat urine is responsible for the spread of leptospirosis, which can result in liver and kidney damage. It can also be contracted through handling or inhalation of scat. Complications include renal and liver failure, as well as cardiovascular problems.
Human Impact On The Desert Biome. Humans have impacted the desert biome in that they have polluted the atmosphere. This affects all biomes, including the desert. People have also drilled for many fossil fuels, such as oil, in the desert.
Lymphocytic Choriomeningitis Virus (LCMV) Lymphocytic choriomeningitis (LCM) is a rare viral disease that can be transmitted through the urine, droppings, saliva, or cage material of infected wild and domestic rodents, including hamsters, guinea pigs, rats, mice, and other small rodents.Dec 18, 2017
Harmful fungi in both agriculture and medicine. Most fungi are saprophytic and not pathogenic to plants, animals and humans. However, a relative few fungal species are phytopathogenic, cause disease (e.g., infections, allergies) in man, and produce toxins that affect plants, animals and humans.
Fungi are useful to humans because they have economic value. Some fungi, such as mushrooms and truffles, are eaten directly, and others are used to produce things of value. ... Fungi are very important ecologically, because they are one of the most important decomposers in most ecosystems.
Humans have collected and grown mushrooms for food for thousands of years. Figure below shows some of the many types of mushrooms that people eat. Yeasts are used in bread baking and brewing alcoholic beverages. Other fungi are used in fermenting a wide variety of foods, including soy sauce, tempeh, and cheeses.Feb 24, 2012
Humans have to grow, hunt, and gather food, but many living things aren't so constrained. Plants, algae and many species of bacteria can make their own sustenance through the process of photosynthesis. They harness sunlight to drive the chemical reactions in their bodies that produce sugars.Sep 7, 2012
Humans have to grow, hunt, and gather food, but many living things aren't so constrained. Plants, algae and many species of bacteria can make their own sustenance through the process of photosynthesis. They harness sunlight to drive the chemical reactions in their bodies that produce sugars.Sep 18, 2012
Human and chimp DNA is so similar because the two species are so closely related. Humans, chimps and bonobos descended from a single ancestor species that lived six or seven million years ago. As humans and chimps gradually evolved from a common ancestor, their DNA, passed from generation to generation, changed too.
Health effects of sulphur. All living things need sulphur. It is especially important for humans because it is part of the amino acid methionine, which is an absolute dietary requirement for us. ... Elemental sulphur is not toxic, but many simple sulphur derivates are, such as sulphur dioxide (SO2) and hydrogen sulfide.
It is actually toxic to your lawn, causing burns and unsightly discoloring. Beyond your grass, it has been estimated that a single gram of dog waste can contain 23 million fecal coliform bacteria, which are known to cause cramps, diarrhea, intestinal illness, and serious kidney disorders in humans.
Cat and dog urine isn't just disgusting; it can harm your health. The dangers of animal urine aren't always obvious, though. No doubt you realize that this urine, like all human and animal waste, carries bacteria that could cause illness. ... Dog or cat urine smells sharply of ammonia, which is an irritant to the lungs.Jul 20, 2016
Children touch and then swallow the tiny worm eggs without realising it. The worms hatch in the gut, then wriggle out of a person's bottom at night to lay more eggs. The female threadworm lays tiny eggs around the anus and vagina (in females). It also secretes mucus that makes you scratch the area.
Functions of Coral Reefs: Coral reefs are important for many different reasons aside from supposedly containing the most diverse ecosystems on the planet. They: protect coastlines from the damaging effects of wave action and tropical storms. provide habitats and shelter for many marine organisms.
Human impact on coral reefs is significant. Coral reefs are dying around the world. Damaging activities include coral mining, pollution (organic and non-organic), overfishing, blast fishing, the digging of canals and access into islands and bays.
Stingrays are considered by most experts to be docile creatures, only attacking in self-defense. Most stingray-related injuries to humans occur to the ankles and lower legs, when someone accidentally steps on a ray buried in the sand and the frightened fish flips up its dangerous tail.
Asia's great ape: Orangutans are the only great apes to be found anywhere in Asia. ... Attacks by orangutans on humans are virtually unheard of; contrast this to the chimpanzee whose aggression towards each other and humans is well documented.Jan 10, 2017
Humans are the #1 threat to all species of Hammerhead Sharks. Attacks on humans are extremely rare. Only 3 of the 9 Hammerhead species (Great, Scalloped, and Smooth Hammerheads) have ever attacked a human. The vast majority of the time, these sharks are safe for divers in open waters.
Out of more than 480 shark species, only three are responsible for two-digit numbers of fatal unprovoked attacks on humans: the great white, tiger and bull; however, the oceanic whitetip has probably killed many more castaways which have not been recorded in the statistics.
Three species are responsible for most human attacks: great white (Carcharodon carcharias), tiger (Galeocerdo cuvier), and bull (Carcharhinus leucas) sharks. While sharks kill fewer than 20 people a year, their own numbers suffer greatly at human hands.Jun 13, 2005
If you put a steamy cup of coffee in the refrigerator, it wouldn't immediately turn cold. Likewise, if the sun simply "turned off" (which is actually physically impossible), the Earth would stay warm—at least compared with the space surrounding it—for a few million years.Jul 16, 2013
Chameleons are solitary animals. Forced handling or unwanted handling can cause hissing and biting. A chameleons bite is painful, however, not toxic or harmful to humans. Handling can cause chameleons to have chronic low-level stress, which leads to poor health.
Silicon dust has little adverse affect on lungs and does not appear to produce significant organic disease or toxic effects when exposures are kept beneath exposure limits. Silicon may cause chronic respiratory effects. Crystalline silica (silicon dioxide) is a potent respiratory hazard.
Since panthers historically prey on white-tailed deer and other animals, livestock often are a substitute. ... A Conservation Commission spokeswoman backed up Bergeron, confirming to PolitiFact Florida that in modern times, there had never been a verified panther attack on a human in the state.Sep 8, 2015
Only female mosquitoes bite. Both male and female feed mainly on fruit and plant nectar, but the female also needs the protein in blood to help her eggs develop. Once she's had her fill of blood, she'll rest for a couple of days before laying her eggs.
Plants make oxygen. ... This oxygen gas, which is an important part of the air, is the gas that plants and animals must have in order to stay alive. When people breathe, it is the oxygen that we take out of the air to keep our cells and bodies alive. All of the oxygen available for living organisms comes from plants.