The Earth's magnetic field saves our lives every day. It works like a giant shield on which harmful rays from the sun and the universe bounce off. That collision of the radiation with the magnetic field is in some cases visible from the earth as a polar light. In the northern hemisphere we speak of northern lights.
The Amazon rainforest is still on fire. That is not only a problem for the flora, fauna and people who are in the burning places. Because if the forest disappears even further, we will soon reach a so-called tipping point in the ecosystem of the rain forest that leads to a pronounced forest death, according to Brazilian climatologists.
The seasons are not determined by the distance from the earth to the sun. The seasons change because the earth is always in a different position relative to the sun. You would think it would be warmest when the earth comes closest to the sun in its elliptical orbit. But that's not true.
The largest waterfall is in the Strait of Denmark. Here a deep sea current passes over a kind of geological threshold at a depth of 600 meters. The salty, cold water of the sea current is heavier than the surrounding water. The heavier water passes the threshold and falls 3505 meters down to the bottom of the Atlantic.
In our regions we usually do not have to worry about toxic flora and fauna. Yet there are animals that you don't want to pet, and plants that you shouldn't eat. Because along the road, on the seabed and even in your own backyard, you can be painfully injured or fatally paralyzed within a few minutes.
The next time you sit on the beach and let a handful of sand pass through your fingers, you may be surprised that you have around 500 billion bacteria in your hand. Only one grain of quartz contains up to one hundred thousand bacteria of different species, forming a small society. Biologists from the Max Planck Institute in Bremen, Germany, looked at how many different bacteria they could find in sand from the area around the island of Helgoland in the North Sea.
Flatworm protects the immune system Flatworms attach to human veins and cause diarrhea, blood in the urine and liver damage, among other things. But the flatworms protect their victims against an even worse condition. They secrete substances that the immune system of their prey can use to fight malaria.
The leaves and stalk of the nettle are full of hairs that look like deadly spines up close. The hairs are tubes of pebble, a form of glass that breaks off even at the slightest touch and leaves a sharp fracture surface, such as when you hit the neck of a bottle. The fracture surface penetrates easily through the skin, where the cell deposits its poison.
Fruit flies in the kitchen It is warm outside again, and that means that the small flies move into the kitchen. But how do they actually get there? People once thought that rats spontaneously formed on garbage heaps, flies were formed from decaying meat and that mites only occurred if edible waste had been lying too long.
It is generally known: a walk in a beautiful autumn forest will make you happy and get more energy. But is it purely psychological that nature makes you happy, or do forest, heath and beach have a physical effect on your body and brain? New research seems to indicate the latter, writes National Geographic.
"If you can talk about quantum mechanics without dizzying, you don't understand." This quote is from Niels Bohr, one of the founders of quantum mechanics. And the Danish physicist had a point, because quantum mechanics still gives scientists headaches 100 years after the theory was born.
Your head, your internal organs and your belly. No part of your body is safe from hungry parasites that invade your body and feed on it. 1. Brain-eating amoeba lurks in the bath VIDEO: The brain-eating amoeba lives in warm, fresh water and penetrates the brain via the olfactory nerves, causing irreparable damage.
White dolphin is a Russian weapon At the island of Ingøy in the high north of Norway, fishermen left their nets for what they were when they received a surprise visit from a white dolphin with a harness. The tame dolphin stopped by a number of fishing boats and tried to get rid of his harness by scouring the boats.
The tree line is the point from which the living conditions are so severe that trees can no longer grow there. Where the tree line is located varies greatly, because the circumstances that determine the line are different everywhere. In some places it is for example the temperature or the amount of precipitation, in other places there are too few sun hours.
The water level in the Dead Sea is falling rapidly. Since 2002, the salt lake between Jordan and Israel has fallen by 17 meters - a drop of around 1 meter per year. Water level of the Dead Sea Water level 2004 -417 m below sea level. Water level 2016 -430.5 m below sea level. Show more Show less This is because the supply of new water from the Jordan, the only large river that flows into the Dead Sea, continues to decline.
'Mammatus' are a type of sack at the bottom of a cloud, reminiscent of the udder of a cow. The name comes from the Latin 'mom', which means udder or breast. Humid air forms bags This phenomenon occurs when drops of cold water vapor sink to the bottom of the cloud. It takes the humid air longer to warm up than the drier air around it and sticks like a bag.
ENVIRONMENT Heading to the poles Many wild animals move farther away from the equator as the temperature on earth rises. But migration can have major consequences for the survival of some species. The planet is getting warmer and due to changing temperatures, more animals are suddenly in a climate where they are struggling to survive.
Listen to article! Have the article read aloud i our app. Read more The sea rises wave after wave, while the murky water full of clay and fine sand mixes with the salty water into an ominous darkness. In the middle of this undersea sandstorm, a large colony of tiny polyps is trying hard to gain access to their most important energy source: the sun.
"Crocodiles at my father's house. Stay out of the water! " Erin Hahn wrote when she posted a photo on Facebook last Sunday of a dark driveway with the silhouette of a crocodile on its way to her father's house. Like many other residents of the Australian state of Queensland, her family has been struck by the extreme amount of water that has fallen here in recent days.
Marianentrog The bottom of the Marianentrog, the deepest place on earth, is 11 kilometers below sea level. The pressure per cm2 corresponds to an adult elephant that stands on your thumb with its entire weight. There is no sunlight on the bottom and the temperature is around 1 ° C, but different microorganisms live in the trough.
Over time, the tough rascals took on forms that you can hardly imagine: from mighty monster crocodiles that did like a dinosaur to bizarre crocodiles that looked like dogs. Even vegetarians have shown us the evolution. For over ten years paleontologist Paul Sereno dug up fossils from the Sahara, and he always had to adjust his idea of a crocodile appearance.