Топ-100

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Sustainable biofuels

Biofuels are fuels from plant materials. They offer the prospect of oil price moderation. Some biofuels can supply sustainable energy. Responsible development of biofuels will help economic prospects in Africa, Latin America and Asia.

                                               

Sustainable development

Sustainable development is a way for people to use resources without the resources running out. It means doing development without damaging or affecting the environment. The term used by the Brundtland Commission defined it as development with su ...

                                               

Sustainable energy

Sustainable energy is energy that is created in an environmentally friendly way. It involves both energy efficiency and renewable energy. Both resources help to stabilize and reduce carbon dioxide emissions. Efficient energy use allows energy dem ...

                                               

Brazilian Space Agency

The Brazilian Space Agency is the Brazilian agency for the countrys growing space program. It runs a spaceport at Alcantara and a launch pad at Barreira do Inferno. The Brazilian Space Agency made Brazil a part of the International Space Station ...

                                               

European Space Agency

European Space Agency or ESA is an international organisation with 22 member countries. Its job is to explore space. Its headquarters are in Paris, France. ESA has a staff of more than 2.000 with an annual budget of about €4.43 billion / US$5.51 ...

                                               

Indian Space Research Organisation

The Indian Space Research Organisation is the agency of India that deals with space exploration and astronomy. Also known as ISRO, the organisation has made many successes since its creation in 1969. It built and launched the Mars Orbiter Mission ...

                                               

Japan Aerospace Exploration Agency

The Japan Aerospace Exploration Agency, also known as JAXA, is Japans national space agency. JAXA is an Independent Administrative Institution. JAXA is responsible for research, technology development and the launch of satellites into orbit. JAXA ...

                                               

National Space Development Agency

National Space Development Agency or NASDA, was one Japans national space agencies from 1969 to 2003. NASDA was responsible for developing satellites and space exerpiments.

                                               

Space colonization

Space colonization is the idea of humans living outside of Earth permanently. At present, there are no space colonies. However, many people have put forward ideas and thought about the first space colony. Some national space programs see space co ...

                                               

Colonization of Mars

The colonization of Mars by humans is an ongoing debate. Some people want to colonize the planet Mars. Satellite imagery shows that there is frozen ground water on the planet. Mars also has a thin atmosphere. Because of this, it has potential to ...

                                               

Dyson sphere

A Dyson sphere is an idea about a structure that surrounds a star, first thought up by physicist Freeman Dyson, and then used in some science fiction works. The idea of the Dyson sphere was the result of a thought experiment. Dyson noted that civ ...

                                               

Institute of Space and Astronautical Science

Institute of Space and Astronautical Science or ISAS, is a Japanese national research organization. ISAS studies astrophysics using rockets and satellites. ISAS is part of the Japan Aerospace Exploration Agency.

                                               

Falcon 9

Falcon 9 is a family of launch vehicles that are built by SpaceX. It is named for its use of nine rocket engines. It is powered by liquid oxygen and rocket grade kerosene. The current version can launch payloads of up to 22.800 kilograms to Low E ...

                                               

"Litoria" castanea

Litoria castanea, also known as the yellow-spotted tree frog, New England swamp frog, tablelands bell frog or yellow-spotted bell frog is a frog from eastern Australia. People thought these frogs were extinct, but then scientists found some in 20 ...

                                               

Abdims stork

The Abdims stork is a black stork with grey legs, red knees and feet, grey bill and white underparts. It has red skin on the face in front of the eye and blue skin near the bill in breeding season. It is the smallest species of stork. It only gro ...

                                               

Acacia

Acacia is a genus of shrub or tree are belonging to the subfamily Mimosoideae of the family Fabaceae, first described in Africa by the Swedish botanist Carl Linnaeus in 1773. Many non-Australian species tend to be thorny, whereas the majority of ...

                                               

Acanthomintha

Acanthomintha is a genus of the Lamiaceae, or mint family. The Acanthomintha genus is commonly referred to as Thornmint. There are a number of species within this genus, including the endangered species Acanthomintha duttonii. All four thornmints ...

                                               

Acanthomyops

Acanthomyops is a genus of ant in the family Formicidae. It has the following species: Acanthomyops pubescens Buren, 1942. Acanthomyops latipes Walsh, 1863. Acanthomyops coloradensis Wheeler, 1917. Acanthomyops colei Wing, 1968. Acanthomyops cali ...

                                               

Accommodation (eye)

Accommodation is the way the eye increases optical power. This is necessary to produce a clear image on an object when it draws near the eye. A lens that is more convex would refract more light rays than a less convex lens. The lens can change sh ...

                                               

Achillobator

Achillobator is a dromaeosaurid theropod dinosaur from the Upper Cretaceous period of what is now Mongolia. It lived about 90 million years ago. It was probably an active predator, hunting with the large sickle-shaped claw on the second toe of ea ...

                                               

Adactylidium

Adactylidium is a genus of mites. It is known for its short and unusual life cycle. The pregnant female mite attaches herself to a single egg of a thrip. She grows from five to eight female offspring and one male in her body. The offspring begin ...

                                               

Adansonia gregorii

Adansonia gregorii, commonly known as the boab, is a tree in the family Malvaceae. Its trunk has a swollen base, which makes it easily recognizable. For this reason it is also called bottle tree. It is endemic to Australia, where it mostly occurs ...

                                               

Addisons disease

Addisons disease is a rare and chronic endocrine disorder discovered by Thomas Addison. U.S. President John F. Kennedy is probably one of the most famous sufferers though his condition was kept secret during his presidency. Addisions disease is w ...

                                               

Adelie penguin

The Adelie penguin is a Antarctic penguin that has a black head and back with a white chest and belly, and a white ring around each of their eyes. There are about 2.5 million Adelie penguins in the Southern Ocean around Antarctica. Adelie penguin ...

                                               

Adult

An adult is a person who is grown up completely. The person is already past the child stage. It is the phase after being a teenager. Once someone reaches adulthood, that person typically no longer has to take directions from a parent or guardian, ...

                                               

Aenictogiton

Aenictogiton is a genus of ants. The genus has seven species. The genus is given its own subfamily, Aenictogitoninae. All of the species are known only from males from middle Africa and show a phylogenetic liking to the army ants. Nothing is know ...

                                               

Aerial root

An Aerial root is a root which is above the ground. Different plants have grown them. They can have different functions: As a parasite. Parasites sometimes grow these, into the host to get nutrients. One example of this is the mistletoe. Roots to ...

                                               

Affenpinscher

Affenpinscher is a small breed of dog in the toy group. These dogs originally came from Germany and are known to have existed since the 1600s. Their name comes from the German word "Affe," which means "monkey," because their faces remind people o ...

                                               

African buffalo

The African buffalo, is a bovine. It is also known as the Cape buffalo. They are not closely related to other bovines. Because of its aggressive behavior, it has not been domesticated like the domestic Asian water buffalo.

                                               

African bullfrog

The African bullfrog is a species of frog. They are in the Ranidae family. They are commonly named pixie frog because of their Latin name. They are found in Angola, Botswana, Kenya, Malawi, Mozambique, Namibia, South Africa, Eswatini, Tanzania, Z ...

                                               

African bush elephant

The African bush elephant is the larger of the two species of African elephant. The bull males can weigh 13000 pounds and stand 13 feet tall at the shoulder. The population of bush elephants has drastically declined in the last thirty years. It i ...

                                               

African golden cat

The African golden cat is a medium-sized cat. This cat was previously listed as Profelis aurata. It weighs about 28 kg on average. The underside of its chest and chin are normally light-colored. In rare cases, they are pure white. This cat is clo ...

                                               

African golden wolf

The African golden wolf is a canine. It usually lives in North Africa and the Horn of Africa. There are many of them in Senegal, Nigeria, Chad, Morocco, Algeria, Tunisia, Libya, Kenya and Egypt, and in Tanzania. It is considered a Least Concern s ...

                                               

African green pigeon

The African green pigeon is a bird native to Sub-Saharan Africa. Adult birds have maroon shoulder patches. The shoulder patches are olive in immature birds. They reach a length of 25–28 cm.

                                               

Africanis

The Africanis is a group of rare South African dogs. They are not recognized as a breed. The Swahili name for the breed is umbwa wa ki-shenzi. This means common or mixed-breed or "traditional dog".

                                               

Afrosoricida

Afrosoricida is an order of mammals, which includes the Tenrecs and the Golden mole. Tenrecs look like hedgehogs in appearance. Golden moles look like moles. Sequence analysis found that these animals are not closely related to other insectivores ...

                                               

Agave

Agave is a type of succulent plant from Mexico and the southwestern parts of the United States. They have thick, sharp leaves. Agave plants flower only once, produce seeds and then die. Before flowering they usually live for 10 to 25 years. Becau ...

                                               

Aggression

Aggression refers to behavior between members of the same species that is intended to cause humiliation, pain, or harm. Ferguson and Beaver defined aggressive behavior as Behavior which is intended to increase the social dominance of the organism ...

                                               

Agujaceratops

Agujaceratops is a chasmosaurine ceratopsid known from two species, A. mariscalensis and A. mavericus, both discovered in Aguja, Texas.

                                               

Ajkaceratops

Ajkaceratops is a genus of ceratopsian dinosaur described in 2010. It lived in the Cretaceous period in what is now Europe, in what was back then the Tethyan archipelago. It is a ceratopsian, and is beaked. Ceratops means "horned face" in Greek. ...

                                               

Akita Inu

The Akita is a breed of dog from Japan. It is usually 60–70 cm high and weighs 35–50 kg. Female Akitas are 5 to 10 kg lighter. Their coat can be many colors. There are two coat types in the Akita, the standard coat length and the long coat. Akita ...

                                               

Alaska plaice

Alaska plaice are salt water fish that live in the north Pacific Ocean. Like most flatfish, they live on the bottom of the continental shelf, up to 600 metres deep. Their geographical range is from the Gulf of Alaska in the east, to the Chukchi S ...

                                               

Albertosaurus

Albertosaurus was a relative of Tyrannosaurus. Albertosaurus was smaller than T. rex and lived a few million years earlier. Albertosaurus walked on two legs and had a large head with sharp, saw-toothed teeth. It had two-fingered hands on short ar ...

                                               

Alder

Alder is the common name for about 30 kinds of trees and shrubs of the Alnus genus. They are a part of the birch family. Most of them are smaller in size. Leaves are mostly deciduous, only very few alders are evergreen. Alder trees are found in a ...

                                               

Aletia

A. empyrea Hudson, 1918. A. sollennis Meyrick, 1914. A. panda Philpott, 1920. A. cyanopetra Meyrick, 1927. A. mitis Butler, 1877. A. dentata Philpott, 1923. A. inconstans Butler, 1880. A. cucullina Guenee. A. obsecrata Meyrick, 1914. A. falsidica ...

                                               

Algal bloom

An algal bloom is an accumulation of algae or a rapid increase in their amount in a body of water. Algal blooms may occur in fresh water as well as salt water. Algal bloom concentrations may reach millions of cells per milliliter of water. Algal ...

                                               

Allele frequency

Allele frequency refers to the different forms of a gene at a single position on a chromosome. It is the proportion of a given allele to all alleles at the same locus. It is usually expressed as a percentage. Allele frequencies may be used to des ...

                                               

Allium

Allium is a genus of flowering plants. It contains garlic, leek, onions and chives. There are hundreds of species, some of which have been cultivated for much of human history. Today, about a dozen species are economically important. The type spe ...

                                               

Allotheria

The Allotheria are an extinct infraclass or superorder of mammals. They are related to the prototheria and theria. The allotheres was a branch of successful Mesozoic mammals. The most important characteristic was the presence of lower molariform ...

                                               

Alvarezsaurus

Alvarezsaurus is a small dinosaur from the Upper Cretaceous of Argentina, about 86-83 million years ago. It measured about 2 meters in length and weighed 20 kilograms. It was named by paleontologist Jose Bonaparte in 1991. It walked on two legs, ...

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Pino - logical board game which is based on tactics and strategy. In general this is a remix of chess, checkers and corners. The game develops imagination, concentration, teaches how to solve tasks, plan their own actions and of course to think logically. It does not matter how much pieces you have, the main thing is how they are placement!

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