Maja Andrzejczuk

Spotted Lake is located in Canada’s desert near the city of Osoyoos, British Columbia. In winter and spring it looks ordinarily, like any other body of water. But in summer yellow, green and blue spots appears on the surface of lake and forms amazing polka-dotted landscape. The number of spots is variable, but usually shall be 300-400. Indigenous people of the Okanagan Nation were considering Spotted lake (known to them as Kliluk) as sacred place. They believed that each of the different circles had different healing and medicinal properties. Causes of this phenomenon are evaporation of water and high concentration of minerals, including calcium, sodium sulphates and magnesium sulphate, but also silver and titanium. What is interesting, during World War I, minerals from the lake were used in the manufacturing of explosives. Nowadays, this area is proctected by fence with a sign explaining that it's a culturally and ecologically sensitive area. Links: https://www.mnn.com

Mammatus clouds are unusual clouds formation, which are hard to confused with another, because of their unique shapes. This phenomenon can extend hundreds of miles in any direction. Mostly, Mammatus clouds are formed in association with large cumulonimbus clouds. It's interesting that "Mammatus" comes from the Latin "mamma" which translates to "udder" or "breast". What's in these  "udders"? It's ice crystals and water droplets, what causes that saturated air is heavier than the surrounding air. For various reasons this phenomenon presents a danger to aircraft. These clouds are usually made of ice. It pose a threat to light aircraft without de-icing systems Wind force is variable , which is dangerous during takeoff and landing  Phenomenon is often associated with funnel clouds, tornadoes and thunderstorms You can also see this phenomenon in Poland. The following photo from this country.  fot. Agata Orzeł

In the Abraham Lake, which is located in Canada, you can see wonderful ice bubbles. Normally, this lake looks ordinarily. However, in winter frozen water creates incredible forms. That phenomenon makes the lake popular so it's often visted by tourists and photographers. This bubbles are actually frozen pockets of methane. Methane is collorless and highly flammable gas, often used as a fuel. This greenhouse gas is produced when bacteria decomposes organic matter in the water. This organic matter includes plants, leaves, trees and animals. When spring comes and ice cracks, methan from bubbles  escapes and vanishes into the atmosphere. This doesn’t just happen in Abraham Lake. This phenomenon occurs in millions of water bodies around the Arctic region. According to the results of work conducted by University of Alaska Fairbanks biogeochemist Natalia Shakhova and her colleagues, around eight million tons of methane in a year is emitted into the air from the Arctic Ocean’s East