Health

Major medical groups call for soda taxes

(HealthDay)—Two medical groups have declared war on sodas and energy drinks by calling for taxes on what has become the leading source of sugar in the diets of children and teens.

Diseases, Conditions, Syndromes

Suspected cholera cases spikes in Yemen in 2019: UN

Nearly 110,000 suspected cases of cholera have been reported in war-hit Yemen since the beginning of January, including 190 related deaths, the UN said on Monday.

Health

Drinking water? There's an app for that

The human body is well equipped to maintain an adequate level of hydration through the various biological feedback control mechanisms of homeostasis. However, this regulation relies on an adequate supply of water. While there ...

Health

Are enhanced waters better for your health?

(HealthDay)—You'll find plenty of nutrient-enriched flavored waters on grocery shelves, but are they any better for your diet than a glass of water with a squeeze of lemon?

Health

For an energizing workout, take it outside

(HealthDay)—As the weather starts to warm up, you might be excited to restart a swimming routine, but swimming isn't the only water sport that's also fun exercise. Many activities that used to be vacation-only pastimes ...

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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