Cardiology

Licorice tea causes hypertensive emergency in patient

Licorice tea, a popular herbal tea, is not without health risks, as a case study of a man admitted to hospital for a high-blood pressure emergency demonstrates in CMAJ (Canadian Medical Association Journal).

Diseases, Conditions, Syndromes

Prevent illness by preventing tick bites

Ready or not, ticks are out. Lyme disease is the most common tick-borne illness, but it's not the only concern, says Dr. Bobbi Pritt, a parasitic diseases expert at Mayo Clinic.

Health

What you need to know about jellyfish stings

Jellyfish have a mighty sting as hundreds of beachgoers in Florida have discovered. More than 800 people were reported to have been stung recently at Central Florida beaches.

Health

Melons are powerhouses in taste, nutrition

(HealthDay)—If you're looking for a tasty way to hydrate in warm weather, a juicy melon is the ticket. Melons are low-calorie, high-water content foods that also provide high doses of certain vitamins, minerals and important ...

Health

CDC: Salmonella outbreaks linked to backyard poultry

(HealthDay)—Backyard flocks of live poultry have been linked with Salmonella outbreaks that have sickened 52 people in 21 states, the U.S. Centers for Disease Control and Prevention said Thursday.

Health

Essentials for growing tasty herbs on your windowsill

(HealthDay)—Whether you have a dedicated space in an outdoor garden or just a few buckets on a small patio, there's nothing quite like having your own herb garden for giving your cooking fresh flavor boosts.

Diseases, Conditions, Syndromes

Flu virus' best friend: Low humidity

Yale researchers have pinpointed a key reason why people are more likely to get sick and even die from flu during winter months: low humidity.

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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