Eco Friendly Energy Sources

Solar power systems - clean electricity from the sun

 Solar power is the conversion of sunlight into electricity . There are two types

1. Directly using photovoltaics (PV) : Photovoltaics convert light into electric current using the photoelectric effect. 
2. Indirectly using concentrated solar power (CSP) : Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam.

Wind is a form of solar energy

Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth.

 

Wind power is the conversion of wind energy into a useful form of energy, such as using: wind turbines to make electricity, windmills for mechanical power, windpumps for water pumping or drainage, or sails to propel ships.

Wind is a form of solar energy. Wind flow patterns are modified by the earth's terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when "harvested" by modern wind turbines, can be used to generate electricity.

First test tube child

25th July First test tube child Born (1978)

On this day in 1978, Louise Joy Brown, the world's first baby to be conceived via in vitro fertilization (IVF) is born at Oldham and District General Hospital in Manchester, England, to parents Lesley and Peter Brown. The healthy baby was delivered shortly before midnight by caesarean section and weighed in at five pounds, 12 ounces.

Before giving birth to Louise, Lesley Brown had suffered years of infertility due to blocked fallopian tubes. In November 1977, she underwent the then-experimental IVF procedure. A mature egg was removed from one of her ovaries and combined in a laboratory dish with her husband’s sperm to form an embryo. The embryo then was implanted into her uterus a few days later. Her IVF doctors, British gynecologist Patrick Steptoe and scientist Robert Edwards, had begun their pioneering collaboration a decade earlier. Once the media learned of the pregnancy, the Browns faced intense public scrutiny. Louise’s birth made headlines around the world and raised various legal and ethical questions.

The Browns had a second daughter, Natalie, several years later, also through IVF. In May 1999, Natalie became the first IVF baby to give birth to a child of her own. The child’s conception was natural, easing some concerns that female IVF babies would be unable to get pregnant naturally. In December 2006, Louise Brown, the original "test tube baby," gave birth to a boy, Cameron John Mullinder, who also was conceived naturally.

Today, IVF is considered a mainstream medical treatment for infertility. Hundreds of thousands of children around the world have been conceived through the procedure, in some cases with donor eggs and sperm.

LUNAR DAY

LUNAR DAY (21/07/2012)

World Population Day 2012

Are you ready for World Population Day?

11/07/2012

        World Population Day is an annual event, observed on July 11, which seeks to raise awareness of global population issues. 

The event was established by the Governing Council of the United Nations Development Programme in 1989. It was inspired by the public interest in Five Billion Day on July 11, 1987, approximately the date on which the world's population reached five billion people.

Message from UNITED NATIONS

Dolly.............the world's most famous sheep

Dolly (5 July 1996 – 14 February 2003) was a female domestic sheep, and the first mammal to be cloned from an adult somatic cell, using the process of nuclear transfer. 

She was cloned by Ian Wilmut, Keith Campbell and colleagues at the Roslin Institute and the biotechnology company PPL Therapeutics near Edinburgh in Scotland. The funding for Dolly's cloning was provided by PPL Therapeutics and the Ministry of Agriculture. She was born on 5 July 1996 and she lived until the age of six, at which point she died from a progressive lung disease. She has been called "the world's most famous sheep" by sources including BBC News and Scientific American. 

 The cell used as the donor for the cloning of Dolly was taken from a mammary gland, and the production of a healthy clone therefore proved that a cell taken from a specific part of the body could recreate a whole individual. On Dolly's name, Wilmut stated "Dolly is derived from a mammary gland cell and we couldn't think of a more impressive pair of glands than Dolly Parton's".