Discovering Something New -- ongoing learning

The arteriograph shows arteries carrying oxygen-rich blood to the brain. The arrangement of the arteries allows blood to be supplied by an...

  (Source:'The Graphic', May 16,1896 - an English Newspaper)

No region of the world is growing faster than sub-Saharan Africa. Today's population of 926 million may hit 2.2 billion by 2050. (Nati...

The boulder, unfortunately has more momentum than the runner Momentum is the mass of an object multiplied by its velocity. The momentum...

(The Human Brain Book, by Rita Carter)

Three types of blood vessels form a complex network of tubes throughout the body. Arteries carry blood away from the heart, and veins car...

Earth is the only place in the universe known to harbor life. However, recent advances in planetary science have changed fundamental assu...

As of 2010, Mandarin was the mother language of 14.4% of the world’s population, Spanish 6.15%, and English 5.43%. Although English r...

Kilauea is located on central Hawaii Island, Hawaii. It is situated on the southeastern slope of the great volcanic mountain Mauna Loa, a...

Circulatory system, or cardiovascular system, in humans, includes the combined functions of the heart, blood, and blood vessels. It trans...

If all the arteries, veins, and capillaries in the human body were placed end to end, the total length would equal more than 100,000 km (...

Call it drive, vigor, enthusiasm, or get-up-and-go. Call it zest, gusto, razzmatazz, or just plain oomph. It's what gives you ambition,...

Buddha’s first teaching to his disciples is reported to have been the “First Turning of the Wheel of Dharma.” The Sanskrit word dharma has...

What makes a technology conventional is its widespread use, and what makes it widespread is its low cost and convenience. Therefore, almo...

A mechanical device formerly used by engineers and scientists for rapid and approximate multiplication, division, extraction of roots, ra...

The first wind turbines actually predate the electric power grid, with two near-simultaneous developments in the late 19th century. The Sco...

The first federal environmental act was the establishment of Yellowstone National Park in March 1872 in the territories of Montana and Wy...

While pollution and global warming have obvious effects on human health, ecologists also define environmental health according to biodive...

In 1924, due to Aldo Leopold's (an American environmentalist) efforts as a Forest Service employee, the Gila National Forest in New M...

The number of known species - characterized by scientific analysis and description - is more than 1.7 million, including nearly 1 million...

Air is the mixture of gases that surrounds the Earth. Air contains mainly the gases nitrogen and oxygen, with small amounts of argon and ot...

Independence Day, commonly known as the Fourth of July, is a federal holiday in the United States commemorating the adoption of the Decla...

Born David Gruen in Poland, Ben-Gurion became committed to Zionism, the movement to settle and unite Jews in Palestine, under the influence...

Great Wall (China), popular name for a semi-legendary wall built to protect China’s northern border in the 3rd century BC, and for impres...

European nations came to the Americas to increase their wealth and broaden their influence over world affairs. The Spanish were among the...

  When you look at rushing waterfalls and rivers, you may not immediately think of electricity. But hydroelectric (water-powered) power pl...

When the steam engine was invented at the beginning of the 18 th century, most sources of fuel worldwide were the same as they had been ...

Believed to be the last photo of Abraham Lincoln, February 1865

The sun is of only average mass, starwise, and after burning through the last of its hydrogen fuel in about five billion years, its outer...

Tardigrades (also known as water bears or moss piglets ) are water-dwelling, segmented   micro-animals, with eight legs. They were fi...

A gospel (from Old English, gōd spell "good news") is a writing that describes the life of Jesus. The word is primarily used to...

Dolphin (aquatic mammal), fast-swimming mammal belonging to the order Cetacea, which also includes whales and porpoises. Sleek and powerf...

Alabama: Was the first state to have 9-1-1, started 1968. Alaska: One out of every 64 people has a pilot's license.  Arizona: ...

The first European music is that of the ancient Greeks and Romans, dating from roughly 500 B.C. to A.D. 3OO. Fewer than a dozen examples ...

The amount of hair covering varies from one individual to another. An average person has about 100,000 hairs on their scalp. Most redhead...

No. The ultraviolet radiation that causes suntan does not pass through glass. A tan is the skin 's natural defense against these harm...

As described in Leviticus 16:1-27, part of a Hebrew ritual on the Day of Atonement involved the presentation of two male goats at the alt...

When you get sick , you must decide what course of action to take in order to recover your health. If you do not accept this responsibility...

Color blindness is a defect of vision affecting the ability to distinguish colors, occurring mostly in males. It involves a person’s inab...

Heavy water contains heavy hydrogen, or deuterium, instead of normal hydrogen.   Deuterium is the stable, nonradioactive isotope of hydro...

The name generally given to a large collection of funerary texts of various dates, containing magical formulas, hymns, and prayers believe...

Besides providing light and heat, the Sun affects the Earth through its ultraviolet radiation, the steady stream of the solar wind, and t...

It is estimated that in 1800 the population of Paris was about 550,000 and New York’s about 60,000. In 1931, however, these numbers incre...

Dr. James Watson, left, and Dr. Francis Crick with their  Nobel Prize-winning model of the DNA molecule Genetic engineering is th...