It has been estimated that there will be 11.2 billion of us by 2100, according to the UN’s most likely scenario. But this is a projection, not a certainty. There’s an outside chance the world’s population could be as high as 16.6 billion by the end of the century. Or it could be as low as 7.3 billion – that’s fewer people than the 7.5 billion alive today. In all the UN scenarios, though, the population keeps increasing until at least 2050.
Researchers face a fundamental challenge as they seek to scale up human tissue regeneration from small lab samples to full-size tissues, bones, even whole organs to implant in people to treat disease or traumatic injuries: how to establish a vascular system that delivers blood deep into the developing tissue.
The internal records are detailed in a new investigation published in October, 2015 by InsideClimate News, a Pulitzer Prize-winning news organization covering energy and the environment, ahead of the Climate Change conference in Paris where, after weeks of negotiations diplomats in France unveiled a landmark deal to tackle climate change and reduce greenhouse gases. The accord aims to limit the rise in global temperatures to less than two degrees Celsius.
Beloved for his cool, crystalline paintings of sunlit California bungalows and poolside male nudes of the 1960s and ’70s, David Hockney is often called Britain’s greatest living artist and even the world’s most popular living painter. The cult of Hockney, who is now 79, continues with a batch of new books, including the catalog to “82 Portraits and 1 Still-Life,” mounted at the Royal Academy of Arts in London last summer, and “A History of Pictures: From the Cave to the Computer Screen,” a lavishly illustrated dialogue between the artist and the art critic Martin Gayford.