Two Arab scientists seeking solutions to global problems | Al Jazeera World

Al Jazeera English published this video item, entitled “Two Arab scientists seeking solutions to global problems | Al Jazeera World” – below is their description.

This is the story of two world-renowned scientists who left their homelands of Libya and Tunisia and went on to achieve great success in South Africa and Malaysia.

Libyan pharmacologist Mohamed Irhuma studied in South Africa but faced a range of challenges when his home country went through its 2011 revolution. He’s achieved success in South African HIV AIDS pharmacology, including award-winning work on drug treatments.

Tunisian chemical engineer Mohamed Kheireddine Aroua is a world expert in material separation, inventing a life-changing water purification machine which benefits remote villages. Both stories illustrate some of the complexities of being an Arab abroad, and the journeys of two remarkable scientists.

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About This Source - Al Jazeera English

The video item below is a piece of English language content from Al Jazeera. Al Jazeera is a Qatari state-funded broadcaster based in Doha, Qatar, owned by the Al Jazeera Media Network.

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In This Story: HIV

The human immunodeficiency viruses (HIV) are two species of Lentivirus (a subgroup of retrovirus) that infect humans. Over time, they cause acquired immunodeficiency syndrome (AIDS), a condition in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.

Without treatment, average survival time after infection with HIV is estimated to be 9 to 11 years, depending on the HIV subtype. In most cases, HIV is a sexually transmitted infection and occurs by contact with or transfer of blood, pre-ejaculate, semen, and vaginal fluids. Research has shown (for both same-sex and opposite-sex couples) that HIV is untransmittable through condomless sexual intercourse if the HIV-positive partner has a consistently undetectable viral load.

Non-sexual transmission can occur from an infected mother to her infant during pregnancy, during childbirth by exposure to her blood or vaginal fluid, and through breast milk. Within these bodily fluids, HIV is present as both free virus particles and virus within infected immune cells.

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Libya, officially the State of Libya, is a country in the Maghreb region in North Africa, bordered by the Mediterranean Sea to the north, Egypt to the east, Sudan to the southeast, Chad to the south, Niger to the southwest, Algeria to the west, and Tunisia to the northwest.

The sovereign state is made of three historical regions: Tripolitania, Fezzan and Cyrenaica. The largest city and capital, Tripoli, is located in western Libya and contains over three million of Libya’s seven million people. The second-largest city is Benghazi, which is located in eastern Libya.

Libya became independent as a kingdom in 1951. A military coup in 1969 overthrew King Idris I. Parts of Libya are currently split between rival Tobruk and Tripoli-based governments, as well as various tribal and Islamist militias.

Libya is a member of the United Nations (since 1955), the Non-Aligned Movement, the Arab League, the OIC and OPEC. The country’s official religion is Islam, with 96.6% of the Libyan population being Sunni Muslims.

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South Africa is a country on the southernmost tip of the African continent, marked by several distinct ecosystems. Inland safari destination Kruger National Park is populated by big game. The Western Cape offers beaches, lush winelands around Stellenbosch and Paarl, craggy cliffs at the Cape of Good Hope, forest and lagoons along the Garden Route, and the city of Cape Town, beneath flat-topped Table Mountain.

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Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa, covering 163,610 square kilometres. Its northernmost point, Cape Angela, is also the northernmost point on the African continent.

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