This scientific article illuminates the adaptation of chameleons to their environment. The text starts with basic facts about the geographic distribution and number of varieties of this species. It then explains how the color pigments in the skin become visible and invisible by cell contraction and how its tongue is adapted to catching prey. The last sections refer to camouflage and the size of the smallest chameleons. The text is child-friendly and written for native speakers 8 years and up.

This article starts with interesting facts about corn. The two next sections focus on the history of corn as a cultivated plant and the multitude of corn varieties and adaptations. The text is written for native speakers age 8 and up.

This is a scientific report with supporting links and audio files. The discussed sections are: Big Bang, the creation of the universe, creation of the solar system and the planet earth. Two audio files describe different creation stories in different traditions and the search for a second planet Earth. The two supporting files deal with the hypothetical questions of what is beyond the universe and what exactly the Big Bang was. The text is written and spoken in child friendly language for children 8 years and up.

This scientific article provides information and picture material to discuss the four functions of feathers: to fly, to protect from water, to protect from cold, to attract females. The text is written in child-friendly language for readers 8 years and up.

This scientific article explains the ethymology, the origin, and the retrieval of fossiles in quarries. An audio link provides an impression of children looking for fossiles in a quarry. The article is written for native speakers age 8 and up. The audio is spoken at a natural pace.

This article startswith illuminating the spectrum of visible and invisible light. It then defines the electromagnetic nature of light in form of minute energy packages. In the last section the text focuses on the danger of sunlight, which is mostly in the invisible part of the spectrum - the ultraviolet light. The article is written for native speakers age 8 and up.

This article opens with the question how to not lose orientation on an ocean with no landmarks nearby. The next section explains how longitudes and latitudes help for orientation in combination with information about time and the position of the sun. The last paragraph illustrates why longitudes were established only 250 years ago due to lack of exact clocks. The article is written for native speakers age 9 and up.

This article compares naturally occuring magnets with industrially produced magnets. It then explains how magnets attract metals and how a compass works. The text is written for native speakers age 8 and up.

This scientific article illuminates different features of owls: silent flight as an adaptation to night hunt, food, European varieties, social life, adaptation to night sight and hearing as well as the turning head. An audio report provides additional information. The text is appropriate for children age 10 and up.

This is a reading text describing alpine cattle raising. It explains how temporary farm workers - Senners - are hired for only four months during the short Alpine summer to attend to herds of cows on meadows in higher altitudes. Besides descriptions about the labor also the ceremonial driving down of cattle from the pastures back into the valley and the rich traditions linked to this event are elaborated in text and picture. An audio recording of this event can be clicked. The text is child-friendly, written for native speakers 10 years and up.

This is a scientific article providing the most important facts about ants. Areas of focus are: specialization and organization within the state, localization and communication, physical features, defense. The article is well structured with headers and sub headers. Each section is illustrated with a photography. The text is written in child-friendly language and aims at native speakers of 10 years and up.

This scientific article discusses several aspects of blood. It explains how to calculate the typical amount of blood by bodyweight, the channel system of veins and arteries, medical conclusions from blood exams, the reasons for bleeding nose and black spots. In the last part, the different components of blood are explained, such as red and white blood cells. Links to additional pages provide more detailed information on some of the sections. The text is written in child-friendly language for native speakers age 8 and up.

This scientific article explains the features and functions of the human brain. It explains the physical features of the brain and how it is connected to the rest of the nervous system. More information regarding its vegetative functions, the processing speed, and moods provide further information. The text is written for native speakers 9 years and up.

This scientific article discusses three different hypothesis regarding the extinction of dinosaurs: 1. a meteor impact, 2. a vulcanic eruption, 3. a slow evolutional change makes space for new species. A weblink opens a page with interview questions directed to a German dinosaur researcher. The text child-friendly and appropriate for children of age 8 and up.

This scientific article discusses two aspects about the sphere shape of our planet: the Earth concept through history of science and gravity as the source for ball-shaped structures in the universe. The text is written in child-friendly language for native readers age 9 and up.

This scientific article provides an overview over static electricty. It starts with the discovery of static electricity and the ethymology of the word "electron." Then two different experiments are explained based on static electricity. In the last part the article explains the phenomenon on a molecular level. The text is written for native speakers age 9 and up.

This article describes why the eyes, nose, mouth, and ears are located where they are. The first focuses on the paired organs for spatial perception. Further links lead to articles that elaborate on the topics, first perceived sounds as a baby, uncomfortable noises, and water in the ear. The last part describes the phenomenon that we are breathing through two nostrils. The text is written in child-friendly language for children 10 and up.

This scientific article touches several different flower features and functions. It starts with the color and the attraction to different pollinators. It then explains how colors are produced in flowers and how scents attract insects. It also discusses how the scent emission varies throughout the day and how different animals perceive different odors. The text is written in child-friendly language for native speakers of 8 years and up.

This scientific article describes the different adaptations of flies to their environmental challenges. It explains the funtion of legs as taste and movement sensors, the spead of processing in a fly brain, and territorial behavior. Additional links provide supportive information for each of the sections. The text is written for native speakers age 8 and up.

This scientific article describes how glaciers are being created and how it ends in the sea, in rivers or in lakes. Additional information is provided about icebergs and why only the tip of an iceberg is visible. The text is written for native speakers 8 years and up.