Color blindness is most often of genetic nature, i.e. You get it from your parents. In 1798, John Dalton, an English chemist, published the first scientific paper on color blindness -- "Extraordinary facts relating to the vision of colours" after... (read more)

To understand what causes color blindness, you need to understand how your eyes see objectives. Our eyes see objectives by light stimulating the retina, a neuro-membrane at the back of the eyes. The retina is made up of Rods and Cones. While the rods... (read more)

Color blindness, also called color vision deficiency, is the decreased ability to see the difference between certain colors. Color blindness can make matching your clothes and accessories difficult, but it does not cause serious problems, and is usually... (read more)

Well, the most simple way to find if a person speak English or not, is to ask them a question in English, such 'Do you speak English?' If they can not understand that, then its definitely a NO. 'Do you speak English?' can be translated as '你会说英文吗?'... (read more)

Cheers can be translated as '干杯' in Chinese. It is pronounced as 'gān beī' in Mandarin. Note, both words are first tones. You can how to pronounce the four tones correctly by following this video - (read more)

In China, there are many dialects, but most people in China understand and can speak mandarin in addition to their own local dialect. However, although there are many different ways to speak Chinese, there are only two ways to write it: Simplified Chinese... (read more)

Asthma does not usually cause any significant harm to the pregnancy. However, severe asthma may cause premature labor or restrict the baby's growth. During pregnancy, the demand for oxygen increases by about 50%. If you have asthma, you may feel even... (read more)

11th week before your baby is due, is the earliest you can start your maternity leave. If you are absent with a pregnancy related sickness during the last six weeks of your pregnancy, your employer has the right to start your maternity early. You can... (read more)

The Tallest Man recorded in history was Robert Pershing Wadlow (February 22, 1918 – July 15, 1940). Wadlow reached a height of 8ft 11.1 inches at his death aged 22. Wadlow’s size and continued growth was due to hypertrophy of his pituitary gland... (read more)

On Tuesday April 26th 1986 an explosion and fire at the Chernobyl nuclear power plant in Ukraine(Former USSR) released enormous quantities of radioactive contaminants into the atmosphere of western USSR and Europe. This is considered to be the worst... (read more)

June 27 1954 saw the first nuclear power plant become operational in Obninsk outside of Moscow. The Worlds first commercial nuclear power station to become operational was Calder Hall in Sellafield England which was opened in 1956 with an initial capacity... (read more)

It is always tricky to choose a right time to tell your employer that you are pregnant. Although your employer has to decide how to cope with it, you should not feel guilty as its their obligations. If you are in low risk jobs, you can wait until you... (read more)

You should take extra precautions if you are travelling to a foreign country. Ask your doctor if you need any vaccinations and which ones are suitable for pregnant women. Always take travel insurance and make sure it covers for pregnancy related cancellation... (read more)

It is safe to drive during pregnancy. However, you are at increased risk of deep vein thrombosis when you are pregnant, so you need to take regular... (read more)

Many pregnant women like to go on a holiday as it maybe the last chance of time together with their partners for some years. It is not advisable to fly during pregnancy if you have a history of high blood pressure or premature labour. Pregnant women... (read more)

Each woman is different, and your feelings may change at different stages of your pregnancy. In the early stages of pregnancy, you may feel too tired and nauseous to enjoy sex, and as the bump grows, you may find uncomfortable and not conductive to an... (read more)

At late stage of pregnancy, sex can help to get you into labor, but only if your body is ready to do so. Interestingly enough, sperm contains the same hormone prostaglandin as the synthetic counterpart used to induce labor. Also, when you are aroused,... (read more)

You may feel detached at the beginning of a pregnancy because you have no signs or symptoms make the pregnancy real. Most of men need something... (read more)

It is absolutely normal to have vivid dreams about pregnancy, as the dreams are expressing your fears and anxieties. Lots pregnant women have the same dream experience. It is probably caused by hormonal changes, as well as the disturbed sleep that... (read more)

Relaxation is resting physically and mentally. It's important to clear your mind and truly unwind. Relaxing is a skill, some people are good at, and others aren't. Pregnancy is the ideal time to start learning relaxing techniques, as they will benefit... (read more)