JOHANNESBURG — At a lecture to peers this month, John Nkengasong showed images that once dogged Africa, with a magazine cover declaring it “The Hopeless Continent.” Then he quoted Ghana’s first president, Kwame Nkrumah: “It is clear that we must find an African solution to our problems, and that this can only be found in… Read More »
Just days after publishing significant new guidance on airborne transmission of the coronavirus, the Centers for Disease Control and Prevention on Monday withdrew the advice, saying only that it had been “posted in error” on the agency’s website. The rapid reversal prompted consternation among scientists and again called into question the credibility of the world’s… Read More »
Here is a sampling of the week’s events and how to tune in (all times are Eastern). Note that events are subject to change after publication. Monday See the video game “The Sims 4” in a different light, courtesy of Pieter Schoolwerth, a Brooklyn-based artist. For “Shifted Sims,” his first solo exhibition at New York’s… Read More »
By Jessica Hamzelou Sleep is important whatever your ageCavan Images/Getty Images Why do we sleep? The answer may depend on the person’s age, according to research that suggests the main role of sleep changes at the age of around two-and-a-half. Newborn babies spend a lot of time sleeping, and this gradually reduces as they get… Read More »