August
Day 22
George Washington Carver is possibly the most famous agricultural scientist of all time.
The story of George Washington Carver's life is interesting and inspiring, as it shows how some people can achieve success despite adversity.
One problem for farmers in the southern United States was that the most widespread crops, cotton and tobacco, tended to remove nutrients from the soil.
When Carver died, in 1943, the American government made his birthplace a national monument.
One of the most famous features of New York City is its dramatic skyline.
New York has more tall buildings, called "skyscrapers," than any other city in the world.
New York is famous for much more than just its architecture.
The United Nations has its headquarters in New York City.
The bustling Times Square, located in the mid-town Manhattan area.
By far the most populous state of the United States is California.
Temperatures in Death Valley sometimes exceed 50 degrees Celsius.
California contains some of the largest cities in the United States. Within the greater Los Angeles area, one can find Hollywood, known as the movie capital of the world. Many rich people live in suburbs such as Beverly Hills.
Further north is the city of San Francisco, one of the most beautiful cities of the United States.
Day 21
In contrast to the dry interior areas, the northern coast of Australia receives a great deal of rainfall.
For example, many of the animals in Australia belong to a special category called the "marsupials".
In many marsupials, the offspring continue to develop, after being born, inside a pocket or "pouch" on the mother's body.
Kangaroos can travel at great speeds by hopping on their hind legs.
The koala lives in the branches of trees called eucalyptus trees.
The first people who lived in Australia were known as the Aborigines.
Aborigines' most famous invention is a curved hunting stick known as the "boomerang".
Tasmania, Victoria, New South Wales, Queensland, Sydney, Melbourne, Canberra, Brisbane, Perth, Adelaide
The old idea that the sun moved around the earth is known as the "geocentric" theory.
Some other Greek philosophers had suggested instead that the earth might travel around the sun. However, this idea, which is known as the "heliocentric" theory, was not widely accepted.
Kepler realized that the planets did not travel in circular paths, but instead, in paths that were elliptical, or oval, in shape.
Day 20
Another volcano, called Mauna Kea, is now dormant.
The temperatures are usually in the range of 20 to 30 degrees Celsius.
The United States built a naval base on the island of Oahu, at Pearl Harbor.
"The theory of evolution by natural selection".
The British navy was planning to send one of its ships, called the Beagle, on a voyage of exploration.
For example, some birds had long beaks that could reach insects hidden in the bark of trees.
When the book, The Origin of Species, was published in 1859, it was very popular and very controversial.
Jazz music, both old and new, is played on the radio and on home stereos.
It was based on African-American music that was derived in part from rhythms in western Africa.
The earliest jazz musicians were influenced by a music style known as "ragtime".
Day 19
These beverages are made by allowing a process called fermentation to occur.
However, the Islamic religion forbids alcohol
In cooler areas of Europe, people make beer by fermenting liquids made from water and various grains.
The process of fermentation is also used to make stronger drinks known as "spirits".
These drinks include vodka, whiskey, and rum.
The techniques for making good wine, beer, and spirits have been developed over hundreds of years, and require scientific precision.
Alcohol belongs to a category of drugs called "depressants"
It "depresses" the central nervous system, causing a person to feel less inhibited or restrained.