Marie Curie

Marie Skłodowska-Curie (7 November 1867 – 4 July 1934) was a Polish physicist and chemistfamous for her pioneering research on radioactivity. She was the first person honored with two Nobel Prizes—in physics and chemistry. She was the first female professor at the University of Paris, and in 1995 became the first woman to be entombed on her own merits in the Panthéon in Paris.

She was born Maria Salomea Skłodowska ([ˈmarja salɔˈmɛa skwɔˈdɔfska]) in Warsaw, in what was then the Kingdom of Poland. She studied at Warsaw's clandestine Floating University and began her practical scientific training in Warsaw. In 1891, aged 24, she followed her older sister Bronisława to study in Paris, where she earned her higher degrees and conducted her subsequent scientific work. She shared her 1903 Nobel Prize in Physics with her husband Pierre Curie and with the physicist Henri Becquerel. Her daughter Irène Joliot-Curie and son-in-law, Frédéric Joliot-Curie, would similarly share a Nobel Prize. She was the sole winner of the 1911 Nobel Prize in Chemistry. Skłodowska-Curie was the first woman to win a Nobel Prize, the only woman to date to win in two fields, and the only person to win in multiple sciences.

Her achievements included a theory of radioactivity (a term that she coined), techniques for isolating radioactive isotopes, and the discovery of two elements, polonium and radium. Under her direction, the world's first studies were conducted into the treatment of neoplasms, using radioactive isotopes. She founded the Curie Institutes in Paris and Warsaw, which remain major centres of medical research today.

While an actively loyal French citizen, Skłodowska-Curie (she used both surnames) never lost her sense of Polish identity. She taught her daughters the Polish language and took them on visits to Poland. She named the first chemical element that she discovered – polonium, which she first isolated in 1898 – after her native country. During World War I she became a member of the Committee for a Free Poland (Komitet Wolnej Polski). In 1932, she founded a Radium Institute (now the Maria Skłodowska–Curie Institute of Oncology) in her home town, Warsaw, headed by her physician-sister Bronisława. Curie died in 1934 of aplastic anemia brought on by her years of exposure to radiation.

AIDS

Acquired immune deficiency syndrome or acquired immunodeficiency syndrome (AIDS) is a disease of the human immune system caused by the human immunodeficiency virus (HIV). The illness interferes with the immune system making people with AIDS much more likely to get infections, including opportunistic infections and tumors that do not affect people with working immune systems. This susceptibility gets worse as the disease continues.
HIV is transmitted in many ways, such as anal, vaginal or oral sex, blood transfusion, contaminated hypodermic needles, exchange between mother and baby during pregnancy, childbirth, and breastfeeding. It can be transmitted by any contact of a mucous membrane or the bloodstream with a bodily fluid that has the virus in it, such as the blood, semen, vaginal fluid, preseminal fluid, or breast milk from an infected person.
The virus and disease are often referred to together as HIV/AIDS. The disease is a major health problem in many parts of the world, and is considered a pandemic, a disease outbreak that is not only present over a large area but is actively spreading.In 2009, the World Health Organization (WHO) estimated that there are 33.4 million people worldwide living with HIV/AIDS, with 2.7 million new HIV infections per year and 2.0 million annual deaths due to AIDS. In 2007, UNAIDS estimated: 33.2 million people worldwide were HIV positive; AIDS killed 2.1 million people in the course of that year, including 330,000 children, and 76% of those deaths occurred in sub-Saharan Africa. According to UNAIDS 2009 report, worldwide some 60 million people have been infected since the start of the pandemic, with some 25 million deaths, and 14 million orphaned children in southern Africa alone.
Genetic research indicates that HIV originated in west-central Africa during the late nineteenth or early twentieth century. AIDS was first recognized by the U. S. Centers for Disease Control and Prevention in 1981 and its cause, HIV, identified in the early 1980s.
Although treatments for HIV/AIDS can slow the course of the disease, there is no known cure or HIV vaccine. Antiretroviral treatment reduces both the deaths and new infections from HIV/AIDS, but these drugs are expensive and the medications are not available in all countries. Due to the difficulty in treating HIV infection, preventing infection is a key aim in controlling the AIDS pandemic, with health organizations promoting safe sex and needle-exchange programmes in attempts to slow the spread of the virus.

Valentines Day in France

Valentines Day in France
Valentine's Day Festival is celebrated with joy and enthusiasm in France. People take opportunity of the occasion and express love to people close through them. Just as in several other countries people in France exchange Valentine's Day greetings through cards, fresh flowers and gifts of love

History of Valentine's Day in France
History of Valentine's Day Festival has a strong association with France. It is said that during the Middle Ages, there was a popular belief in France and England that birds began to mate halfway through the second month of the year. For this reason lovers saw the day special and considered it auspicious to exchange love letters and tokens of love on Valentine's Day. During fourteenth and fifteenth centuries, French and English poets and litterateurs too stressed on this idea and created a romantic image of the day in the minds of the people.

Valentine's Day Cards too are said to have originated in France. A young Frenchman, Charles, Duke of Orleans is said to have written the first written Valentine's Day Cards. The Duke who was captured at the Battle of Agincourt in 1415 is said to have written a poem or ‘Valentine' to his wife while imprisonment in the Tower of London.

Valentine's Day Custom in France
People in France once followed a peculiar Valentine's Day custom called “drawing for”. Unmarried young and old people would go into houses facing each other and begin calling out across from one window to another and pair off with their chosen partner. If the young man failed to be particularly enthralled with his valentine, he would desert her. A bonfire would be lit later where ladies would burn images of their ungrateful lovers and hurl abuses at them. The ritual was eventually abandoned as it left much room for nastiness and ridicule. French government handed-down a decree and officially banned the custom.

There was also a custom in France to exchange elegant cards containing tender messages called cartes d'amities. These were not essentially Valentine and resulted chiefly due a trend popular in England.