River biodiversity and our water security are in serious trouble, according to a comprehensive survey of waterways released yesterday. At risk are the water supplies of nearly 80 percent of humanity, and a variety of habitats along rivers that carry two-thirds of the world’s water flow.

Hotspots of concern include nearly the whole of Europe, the Indian subcontinent, eastern China, southern Mexico, and the United States east of the Rockies.

Rivers, wetlands, lakes, and the life that relies on them, are at risk around the world because of a variety of stresses, including overuse of water, pollution, introduction of exotic species, and overfishing, according to the new study, published today in the journal Nature. Read more

We’re constantly told to drink more liquids, with water especially recommended for re-hydrating thanks to its lack of any additives or diuretic qualities. But pure water, even the best mineral water money can buy, can be boring to drink all the time. Beverage manufacturers are aware of this with “flavored water” appearing on the shelves next to the regular stuff in recent times. The Aqua Zinger water bottle however, takes a DIY approach to spicing up your liquid intake by means of an attachable food blender.

Aqua Zinger is at its core a water bottle just like any other. It’s made from stainless steel and BPA/EA-free Tritan Plastic, it’s reusable, easy to clean, and suitable for both hot and cold drinks. What divides Aqua Zinger from other water bottles on the market is the addition of a manual food blender which attaches to the underside.

This blender, which comprises a small plastic container and a detachable metal grinder, accommodates the fruit, vegetables, or herbs you need to liven up plain water. You simply put your choice of ingredients in the blender, damp them down with the grinder, and then attach the whole thing to the bottle. The act of screwing the blender onto the bottom of the bottle is what crushes and mixes the ingredients, so no batteries are required. Read more

In an increasingly busy and relentless world where information is flowing all around us, it’s more important than ever to switch off once in a while. There are many ways to relax, but floating in water is one of the best ways of completely and utterly drifting away. Which is where Float – designed to make floating in water a more pleasurable experience – could prove useful.

Float is a water therapy product originating from Iceland. It’s designed to aid total relaxation of body and mind by taking the effort out of floating on water. You can probably get a similar experience by floating in the sea, as salt water is denser than freshwater. But floating mindlessly in the sea carries the risk of being taken away from shore by an outgoing tide. As Float is designed to be used in a swimming pool, it’s likely to be a safer alternative. Read more

In areas where clean water isn’t easily accessible, solar stills can help purify available water that might be dirty or salty. These devices absorb heat from sunlight and use it to evaporate water, leaving behind contaminants and reforming as a liquid in a separate container, and although they work, they can be relatively expensive and inefficient. Researchers have now developed a new type of solar still using carbon-coated paper that they say is cheaper and more than twice as efficient as existing devices.

Solar stills can be live-saving devices for people in developing countries or disaster-affected areas, but there’s room for improvement according to the team made up of members from the University at Buffalo (UB), China’s Fudan University and the University of Wisconsin-Madison.

“People lacking adequate drinking water have employed solar stills for years, however, these devices are inefficient,” says Haomin Song, a co-author of the study. “For example, many devices lose valuable heat energy due to heating the bulk liquid during the evaporation process. Meanwhile, systems that require optical concentrators, such as mirrors and lenses, to concentrate the sunlight are costly.” Read more

Across the globe, 2.5 billion people lack access to improved sanitation. One billion have to defecate in the open, 748 million lack access to improved drinking water and 1.8 billion use a source of drinking water contaminated with faeces. These are some of the statistics that highlight the enormity of the challenge facing the world if the draft Sustainable Development Goal of safe drinking water, sanitation and hygiene for all is to be achieved by 2030. Read more