How does the light colour influence the growth of the plant?

Plant light

Plants convert light into food through photosynthesis. Without light, they die. Sunlight is the most natural way of providing plants with enough light. Sunlight consists of a variety of different coloured rays of light, which can be seen by looking at the light through a prism. The visible light rays range from blue light to red light. Plants absorb all colours of sunlight, but only need certain colours to grow.

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How to prevent motion sickness on long-haul flights

Aeroplane and motion sickness

Even frequent travellers occasionally suffer from motion sickness when they spend many hours on a plane. On the plane, motion sickness is caused by pressure differences that can disturb the body's balance and cause nausea. In addition to travel tablets available in pharmacies, there are various home remedies to prevent or alleviate motion sickness.

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Sudden change in altitude can make you ill

Altitude sickness

Higher altitudes can have a considerable effect on the body. The further you are from sea level (sea level), the less oxygen there is in the air and the air is less pressurised. The lower air pressure makes it more difficult for the body to absorb oxygen. If the body is not used to sudden differences in altitude, you can become ill - this is known as altitude sickness. 

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