Graiza Dokolie

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World Water DayWorld Water Day is observed on March 22 since 1993. It was declared as such by the United Nations General...
16/05/2022

World Water Day

World Water Day is observed on March 22 since 1993. It was declared as such by the United Nations General Assembly. This day was first formally proposed in Agenda of the 1992 United Nations Conference on Environment and Development (UNCED) in Rio de Janeiro, Brazil. Observance began in 1993 and has grown significantly ever since.

The UN and its member nations devote this day to implementing UN recommendations and promoting concrete activities within their countries regarding the world’s water resources. Each year, one of various UN agencies involved in water issues takes the lead in promoting and coordinating international activities for World Water Day.

In addition to the UN member states, a number of NGOs promoting clean water and sustainable aquatic habitats have used World Day for Water as a time to focus public attention on the critical water issues of our era. Every three years since 1997, the World Water Council has drawn thousands to participate in its World Water Forum during the week of World Day for Water. Participating agencies and NGOs have highlighted issues such as a billion people being without access to safe water for drinking and the role of gender in family access to safe water.

Ivory TradeIvory trade poses a threat to the very existence of elephants. Ivory hunters were responsible for wiping out ...
13/05/2022

Ivory Trade

Ivory trade poses a threat to the very existence of elephants. Ivory hunters were responsible for wiping out elephants in North Africa perhaps about 1,000 years ago, in much of South Africa in the 19th century and most of West Africa by the end of the 20th century. At the peak of the ivory trade, pre 20th century, during the colonization of Africa, around 800 to 1,000 tons of ivory was sent to Europe alone.

Elephant ivory has been exported from Africa and Asia for centuries with records going back to the 14th century BC. Throughout the colonization of Africa ivory was removed, often using slaves to carry the tusks, to be used for piano keys, billiard balls and other expressions of exotic wealth.

Although many ivory traders repeatedly claimed that the problem was habitat loss, it became glaringly clear that the threat was primarily the international ivory trade.

Should there be a legal trade in elephant ivory? This debate has been going on since at least 1989, when the Convention on International Trade in Endangered Species (CITES) voted to “ban” the international trade in ivory after a ferocious wave of poaching in Africa that left hundreds of thousands of elephants butchered.

While some conservationists say that a limited legal ivory trade is needed to satiate demand, especially in China, in a controlled manner, environmental activists ask whether elephants can survive a legal ivory trade. They argue that the 1989 ban must be kept in place to protect elephants, especially now that poaching has once again risen to catastrophic levels.

Why Africans Aren't White?If dark skin absorbs more sunlight, why native African people aren't white?Indeed, physics cal...
24/04/2022

Why Africans Aren't White?

If dark skin absorbs more sunlight, why native African people aren't white?
Indeed, physics calls for a pale skin in a sunny climate to reflect unwanted light and heat from your organism, BUT...
Much sunshine means much ultraviolet (UV) radiation. UV helps produce vitamin D which is indispensible for strong bones. But also UV damages folic acid which is necessary for our nervous system. Lack of folic acid leads to spinabifida and other deseases like legs paralysis and reproductive problems.
So people in sunny Africa are guaranteed lots of vitamin D, but are in danger of losing folic acid because of high UV radiation. As a result their skin contains a lot of melanin, a pigment that prevents the short wavelengths of light, the UV, from penetrating deep into the skin. It is melanin that gives dark colour to their skin.
Nina Jablonksi, Professor of Anthropology from Penn State University in the US says: 'Africans can afford to have dark skin and still make enough vitamin D and not lose their folate but once you get up to the parts of the latitudes we live in, vitamin D becomes the real problem. You need to make enough vitamin D and so you have to have pale skin. There’s so little UV because we hardly ever see the Sun anyway that the folic acid depletion doesn't become a problem.'

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