Health

Quinn on Nutrition: Tea, the perfect brew

After helping me put away Christmas decorations for another year, my younger daughter and I decided to have a tea party … just because. I retrieved my treasured china tea pot that my mom hand-painted many years ago and ...

Health

How to guard against home heating hazards

Many Americans are working at home or attending school virtually during the COVID-19 pandemic, leading to increased use of home heating and its potential risks, an expert says.

Health

Drinking water significant source of microplastics in human diet

Emerging environmental contaminants, both chemicals and particulates, have been a concern for risk scientists for many years. Methods for reducing health and environmental risks from particles are still evolving. Micro/nanoplastic ...

Diseases, Conditions, Syndromes

A humidifier could help ward off COVID-19, but don't overdo it

n a building crammed with mass spectrometers, gene sequencers, and other sophisticated equipment for studying the science of smell, Pam Dalton uses a low-tech approach to maintain her nasal health.

Diabetes

Water may be an effective treatment for metabolic syndrome

Researchers at the University of Colorado Anschutz Medical Campus have discovered that fructose stimulates the release of vasopressin, a hormone linked to obesity and diabetes. They also found that water can suppress the ...

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Water

Water is a ubiquitous chemical substance, composed of hydrogen and oxygen, that is essential for the survival of many known forms of life. In typical usage, water refers only to its liquid form or state, but the substance also has a solid state, ice, and a gaseous state, water vapor or steam. Water covers 71% of the Earth's surface. On Earth, it is found mostly in oceans and other large water bodies, with 1.6% of water below ground in aquifers and 0.001% in the air as vapor, clouds (formed of solid and liquid water particles suspended in air), and precipitation. Saltwater oceans hold 97% of surface water, glaciers and polar ice caps 2.4%, and other land surface water such as rivers, lakes and ponds 0.6%. A very small amount of the Earth's water is contained within biological bodies and manufactured products. Other water is trapped in ice caps, glaciers, aquifers, or in lakes, sometimes providing fresh water for life on land.

Water moves continually through a cycle of evaporation or transpiration (evapotranspiration), precipitation, and runoff, usually reaching the sea. Winds carry water vapor over land at the same rate as runoff into the sea. Over land, evaporation and transpiration contribute to the precipitation over land.

Clean, fresh drinking water is essential to human and other lifeforms. Access to safe drinking water has improved steadily and substantially over the last decades in almost every part of the world. There is a clear correlation between access to safe water and GDP per capita. However, some observers have estimated that by 2025 more than half of the world population will be facing water-based vulnerability. Water plays an important role in the world economy, as it functions as a solvent for a wide variety of chemical substances and facilitates industrial cooling and transportation. Approximately 70 percent of freshwater is consumed by agriculture.

This text uses material from Wikipedia, licensed under CC BY-SA