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Algae: Slime life
The Forum
Dec 9, 2021

They’re slimy and slippery. They’re part of the green film you see on garden ponds. They can clump together and wash up on the shores of beautiful beaches. A lot of them are invisible to the naked eye. These underappreciated organisms called algae are indispensable to the presence of life on earth but not all is straightforward about them. They can be single celled or multi cellular. They can be ugly and slimy or sometimes beautiful: indeed are even a tourist attraction. They may be found in the sea or on land. They can be life-creating and yet life-destroying and toxic in excess. So perhaps it’s time we paid more attention to algae and their evolution. Rajan Datar is joined by Ruth Kassinger, author of Slime: How algae created us, plague us and just might save us; Dr Brenda Soler-Figueroa, a marine scientist at the Smithsonian Environmental Research Centre; Dr Gothamie Weerakoon Senior Curator of Lichens and Slime Moulds at the Natural History Museum of London and author of Fascinating Lichens of Sri Lanka; and Stefan Bengtson, emeritus professor at the Swedish Museum of Natural History.

(Photo: Volvox algae colonies, spherical forms outlined by biflagellate cells interconnected by cytoplasmic bridges. Credit: DeAgostini/Getty Images)

More Episodes
Aug 16, 2025
The unfolding history of the magazine

When magazines first emerged, they were the preserve of an elite who could afford to pay for them. But as time went on, the cost of paper fell, printing technology became more streamlined, literacy improved and would-be publishers spotted an opportunity to connect with audiences hungry for information and entertainment.

Magazines found a place to appeal to all types of interest, in the same way that the internet does today. In their heyday they attracted some of the best writers such as Charles Dickens and Ernest Hemingway, sometimes acting as a vehicle to establish literary careers. Later magazines were to become the go-to place for quality photography and design.

Falling advertising revenues have largely contributed to the decline of printed magazines, as well as editions moving online. However some titles have found a way of reinventing themselves in the 21st century.

Iszi Lawrence is joined by a panel of guests to discuss the rise and evolution of magazines. Usha Raman is a professor in the Department of Communication at the University of Hyderabad in India, who began her career in magazines, writing and editing a variety of publications. She's also the owner and editor of a specialist magazine for teachers.

Samir Husni is the founder and director of the Magazine Media Centre in the United States. He's also written many books, including Inside the Great Minds of Magazine Makers.

And Tim Holmes is a former magazine editor, writer and until his retirement, leader for many years of the magazine journalism course at the University of Cardiff in the UK. We'll also hear from a variety of Forum listeners from around the world, who share their thoughts on magazines.

Produced by Fiona Clampin for BBC World Service.

(Photo: Newspapers and magazines on display at a newsstand on January 31, 2010 in Khan Market New Delhi, India. Photo by Rajkumar/Mint via Getty Images)


48min 36sec




Algae: Slime life

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