Clean water. It’s something most of us take for granted. We turn on a faucet and don’t give a second thought that the water coming out of it for cooking, cleaning and drinking is pure and safe.

For many around the world, however, this can be a risky assumption. The supply of healthy water can’t keep up with the demands of increasing populations, as well as the effects of climate change. But scientists are developing a technology that can help address this crisis using something we do have plenty of: sunlight.

More than 2 billion people worldwide live without access to safe, clean water. As the problem is exacerbated by climate change, scientists have come up with a new solution using sunlight, a plentiful resource.

The United Nations says more than 2 billion people are without ready access to safe, clean water for drinking and for sanitation — a basic human right declared by the U.N. General Assembly in 2010. And 1 million people die each year from diseases related to unsafe water and hygiene. Add to this the dual demands of more agriculture and more energy that more people create, as well as the changing weather patterns that are increasingly common, and the pressures for a safe and stable water supply only continue to increase. Read more

Food and shelter are crucial for living, but nobody can survive for very long without water. That’s why, since the beginning of history, civilizations have lived near abundant sources of H20.

University of Virginia engineer Jim Smith and Dr. Rebecca Dillingham, co-directors of PureMadi, are shown with one of the ceramic water filters their company makes and distributes in South Africa for communities with little access to clean water.

But it’s not enough just to have plenty of it. The same water that gives life can also make people sick or even kill them, if it contains dangerous substances or disease-causing microbes. And since people use water for activities such as irrigating crops, washing and waste disposal, sources of water close to a human population can easily become contaminated. Read more

1 billion 200 million people are living near directly some water. People whose survival depends on water. Their life conditions are determined by quality of water that is getting worse and worse year by year.

Ones live in big cities other in isolation settlement. Their fields are threatened by fire day by day. People and culture on coastlines, lakes, rivers differ very much and water is that makes them connect each other in Brazil, France, Romania. Read more

For m­any ea­rthlings, 2008 was a­ year of too much or too little water. While droughts and floods on this planet kept many people occupied, others had their eyes on the weather forecast millions of miles away, as the Phoenix Mars Lander touched down on our sister planet.

Geographical features such as the Echus Chasam have captured the imaginations of scientists and dreamers for decades. Did Martian water etch these valleys in the planet’s surface? 

In the 1800s, human imaginations ran wild as astronomers glimpsed what they took to be canals on the Martian surface. Scientists pondered the possibility of life on the red planet, while artists and dreamers such as H.G. Wells took the notion even further, imagining a Martian conquest of Earth in his 1898 book “War of the Worlds.” As the decades rolled by, scientific discoveries subdued our expectations, but the questions remained: Has Mars ever supported life, and could it ever support human colonies? Both scenarios depend on liquid water.

In 2005, after 14 successful missions to Mars, these questions were still prevalent when ­NASAlaunched the Mars Reconnaissance Orbiter into space. But when scientists compared high-resolution 3-D images of Mars taken by the orbiter to images from 1999, they noticed something unusual. A series of bright, depository streaks had formed in gullies during the intervening years. Since flash floods can carve away soil and leave behind new sediments on Earth, some observers thought they finally had strong evidence that liquid water, and therefore the potential for life, existed on Mars.

Since life as we know it — even the most bizarre varieties — depends on liquid water, scientists assume that it would also be a necessity for extraterrestrial organisms. Mars is replete with water, but most (if not all) of it is in frozen or vapor form. For instance, ice caps the planet’s poles, and patches of ice lie over dunes in craters. Read more

Most people know that the human body is made up of about 60% water and that drinking water is important. However, many are not aware of some of the concrete effects that water – or the lack of water – has on the body. These effects make a strong case for anyone to make changes in their water drinking habits and make the effort to drink enough water. So, what are these effects that water has on the body and what are some good reasons to drink water?

First, a basic understanding of the water balance in our bodies is needed. A lack of water in our systems is known as dehydration. This occurs when water intake does not reach the level of your water output. Under normal conditions the body constantly uses and processes water. The body’s use of water increases in warmer climates, during strenuous exercise, after health treatments as the body automatically starts to detox and in high altitudes. Some other health conditions and changes in your body such as diabetes, pregnancy, breast-feeding, growing older, menstruation, and some prescription medications also make your body use up water more quickly than under normal conditions. Read more