March 22, 2019, is World Water Day. Water is a basic human right. According to the United Nations, Water scarcity affects more than 40% of people (40% !) around the world, and this is projected to increase with the rise of global temperatures. Providing clean water and sanitation for all is a huge challenge.Continue reading World Water Day 2019: what’s space got to do with it?
Fresh water is the most important resource for human life on earth. People can survive far longer without food than without water, and virtually all of our food sources require fresh water to grow or create.
Global climate change and the exponential increase in population has led to water scarcity and recent headline-grabbing water shortages in major urban centers like Capetown and Sao Paulo.
As water scarcity or cleanliness continue to present major issues to humanity’s survival, communities across the globe are turning to technology to help access more fresh water–or create it using seemingly ‘magic’ techniques.Continue reading Freshwater Is Disappearing. Can Technology Save Us?
Dr. Adam Nieman created this image in 2003, illustrating the volume of the planet Earth’s oceans and atmosphere (if the air were all at sea-level density) by rendering them as spheres sitting next to the Earth instead of spreading out over its surface.Continue reading All the Earth’s water and air
Despite today people are living longer, healthier, and happier lives than ever before, there are still many problems that humanity should address. One of the most important of them is the water inequality. While people in First World countries can very easily take fresh, clean water for granted, more than 800 million others in impoverished areas have no access to any clean water source. It is a common occurrence in some regions for people to defecate openly, walk more than 30 minutes to access clean water and share toilets with other humans. In 2018, is this really something that we should just accept as an inevitable way of the world?
On September 27, BBC has published the prequel of “Blue Planet II”. Like “The Blue Planet”, which was premiered on 12 September 2001, it is narrated by Sir David Attenborough, the English broadcaster and naturalist. The exclusive track developed by the German composer and record producer Hans Zimmer and the English rock band Radiohead.
Scientists spotted water in the atmosphere of 51 Pegasi b, one of the first exoplanets ever been discovered. It is around 50 light years away – so we can call it a “nearby” exoplanet – and it is in the constellation of Pegasus.
51 Pegasi b has not marked a breakthrough in astronomical research for the first time: back in 1995, it was the first exoplanet to be discovered orbiting a main-sequence star. The first confirmed exoplanet discovery came in 1992 when several terrestrial-mass planets orbiting the pulsar PSR B1257+12.Continue reading Water found on the exoplanet 51 Pegasi b
What if Mars still had liquid water on its surface and a thick atmosphere filled with clouds, like Earth? How would it look like? Software engineer Kevin Gill of JPL (NASA’s Jet Propulsion Laboratory) wondered this and prepared an image using data from NASA’s Mars Reconnaissance Orbiter (MRO)(1) and Mars Orbiter Laser Altimeter (MOLA)(2). The result is stunning!
Gill picked an arbitrary sea level and used GIMP (a free and open-source raster graphics editor used for image retouching and editing) to paint the features onto the satellite images using these measurements.Continue reading How Mars would look if it still had water
Earth is still the only planet we know where water can exist in liquid form on the surface and the water is vital for all known forms of life. Rain brings life: it is a major component of the water cycle (also known as
Earth is a blue marble in the space: the water, gives our planet its blue color: about 71 percent of the Earth’s surface is water-covered. There is roughly 326 million cubic miles (1.332 billion cubic kilometers) water on the Earth’s surface. Almost 97% of that water is salty (ocean water). But where all that water came from?
Our planet is getting warmer every year, and the horrible fact is,
Almost 10% of the world’s land surface is currently covered with glaciers, mostly in places like Greenland and Antarctica. The amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth (332,500,000 cubic miles, or 1,386,000,000 cubic kilometers), but the majority of total freshwater on Earth, about 68.7%, is held in ice caps and glaciers. And if all land ice melted the seas would rise about 70 meters (about 230 feet).
What if all these ice melted? What would Earth look like? Alex Kuzoian of Business Insider prepared a video showing the effects of the global melting, and if it happens, “this would dramatically reshape the continents and drown many of the world’s major cities.”