Forbes Releases 2019 List of Richest Men in Africa Nigeria’s Aliko Dangote has retained his place as the richest man in Africa. He remained number one on the newly released Forbes’ list of African billionaires. He, however, lost almost $2bn compared to his last year’s worth. The list was released on Wednesday. Dangote’s estimated $10.3 billion net worth is nearly $2 billion less than a year ago. Another Nigerian, Folorunsho Alakija was one of the billionaires, who suffered a drop in their net worth between last year and this year, as she held No 19 on the 20-man list. The rating magazine reports that Alakija’s net worth dropped due to a decline in the value of one of Nigeria’s most productive oil fields. Mike Adenuga, the owner of Globacom, emerged Africa’s 5th richest man. He is worth an estimated $9.2 billion. Others are Nigeria’s cement mogul Abdulsamad Rabiu, who runs and owns the BUA Group, standing at number 16 on the list for the first time since 2015. Here ...

How to tell if you have an STD by Business Insider Plenty of illnesses announce their arrival with annoying or even alarming symptoms. But sexually transmitted diseases (better known as STDs) often don't. "In general, we say that most STDs are mostly asymptomatic," Dr. Charlotte Gaydos, a professor in the division of infectious diseases Johns Hopkins University School of Medicine, told INSIDER. That means you might have an STD for a long time — potentially spreading it to sexual partners and leaving yourself at risk for health complications — but have no idea you're infected. This lack of symptoms is particularly prominent for certain STDs. For example, most people with chlamydia have no symptoms, according to the Centers for Disease Control and Prevention (CDC). This is especially true for women: Up to 80% of women with the infection don't have them, Gaydos said. About half of women also don't show gonorrhea symptoms, Gaydos added (but men us...