One of the most popular felid is the domestic cat, that has being associated with humans about 10,000 years ago. However, the Felidae family include all other wild cats, including the “big cats”, a term commonly used to refer large wild cats. The several species of cat are quite similar, in structure and behavior, despite of the enormous differences in size. All cats are carnivores and efficient apex predators. What is it about the big …
Spider… A lot of people gets terrified just to hear the word spider. In fact, they are not the most cuddly looking creatures and some of them can really kill people! They are everywhere, and you may not know it but, there is always a spider within a few feet of you at any one time! There are so many different spider species, approximately 40,000 world wide, that it’s hard to figure out which ones …
1. Brown Dwarfs Brown dwarfs are sometimes referred to as “failed” stars. They are too low in mass to fuse atoms at their cores, and thus don’t burn with the fires, that keep stars like our sun shining steadily for billions of years. Instead, these objects cool and fade with time, until what little light they do emit is at infrared wavelengths. The Y’s are the coldest members of the brown dwarf family. One of …
1. Speed The speed of light in vacuum is around 300,000 kilometres per second (186,000 miles per second). 2. Variable Speed The speed of light is less than in vacuum when traveling through different transparent substances containing ordinary matter. For example the speed of light in water is about 3/4 of that in vacuum. 3. Sunlight Sunlight takes about 8 minutes and 17 seconds to travel the average distance from the surface of the Sun …
1. Satellite The Moon is not a planet, it is the natural satellite of the Earth. 2. Surface The surface area of the Moon is 37,932,000 square km (14,658,000 square miles) or 9.4 billion acres. 3. Radius The radius of the Moon is 1,738 kilometers (1,080 miles). 4. Diameter The diameter of the Moon is 3,476 kilometers (2,160 miles). 5. Weight The total weight of the Moon is 74 sextillion kilograms (81 Quintillion Tons). 6. …
1. Naming Earth is the only planet in the solar system whose name does not derive from gods or goddesses names. 2. Centre of the Universe Due to the apparent movements of the Sun and the planets in relation to our viewpoint, ancient civilizations believed in the Ptolemaic system, a description of the cosmos where Earth is at the orbital center of all celestial bodies. It was not until the time of Copernicus (sixteenth century) …
And God said, “Let the waters swarm with swarms of living creatures, and let birds fly above the earth across the expanse of the heavens.” – Genesis 1:20 They are the most beautiful creatures of God, birds enhance the beauty of our world. It´s impossible to imagine Earth without their songs or their flight in the sky. Let´s fly on the wings of beauty. Welcome to the Top List of 15 Most Amazing Exotic Birds! …
Extremophiles can live just about anywhere. That’s great, however what the hell are extremophiles? That’s is what you are thinking, right? Well, the name, that literally means extreme loving, as proposed in 1974 by the scientist R.D. MacElroy to designate any organism able to support environmental conditions usually fatal to most eukaryotic cells, and the term extremophile is relatively anthropocentric. Usually, we tend to judge habitats based on what would be considered “extreme” for human …
Endangered species are those considered to be at risk of extinction, meaning that there are so few left of their kind that they could disappear from the planet altogether. Endangered species are threatened by factors such as habitat loss, hunting, disease and climate change, and usually, endangered species, have a declining population or a very limited range. According to the World Wildlife Federation (WWF), 15 of the most endangered species (and classified as “Critically Endangered” …
Humans love to think they own the world. But the truth is that we are just one of hundreds of thousands of species living on Earth – including all types of insects. It is estimated that there are 1.5 billion of crawling creatures and, although this number includes graceful butterflies, dangerous insects are contemplated too. In the world, there are about 900 thousand different kinds of living insects, making up about 80% of all of …