African Tech Roundup - Nokia’s New Dumbphone Dominates Headlines + The Kalenga Conundrum

Whatever you think of Nokia's re-introduction of the legendary 3310 device, you've got to hand it to HMD Global for completely owning Mobile World Congress 2017 in terms of capturing headlines. In fact, you'd be hard-pressed to recall any other major announcement made at the world's premier mobile showcase this year. In this week's African Tech Round-up, Andile Masuku is joined by Zambian author, speaker and marketer extraordinaire, Musa Kalenga, to work out how much of the hype surrounding Nokia's new/old "dumbphone" is actually deserved, and whether the handset has the potential to do well if it's rolled out in Africa. You should also tune in to hear Musa factor in on some of the biggest headlines from the last couple of weeks, as well as to hear him unpack insights from a second book he has in the works, The Kalenga Conundrum-- which is just one of the many projects keeping him very busy in the wake of giving up his client partner role at Facebook Africa in recent weeks. Music Credits: Music by Kevin MacLeod (incompetech.com) Music licensed under Creative Commons: By Attribution

Serious Inquiries Only - SIO21: Be Reasonable, with Michael Marshall

Joining me today is Michael Marshall, host of the podcast Be Reasonable.  On his show, Marsh speaks with people who have incredibly fringe views.  Whether it's a ghost hunter or flat Earther, Be Reasonable allows a place for these folks to speak at length on their views. Marsh messaged me after my interview with Trump supporter Dr. Price because of the similarity in that recording to what Marsh is doing on his show. In this interview, Marsh and I have a dialogue about what tactics he uses when speaking to people of vastly different views, and I pick his brain on a number of issues involved. There's a lot to learn here about how I want to conduct interviews in the future when I'm dealing with someone of vastly different views. Check out Marsh's charity goodthinkingsociety.org Leave us a Voicemail: (916) 750-4746! Support us on Patreon at:  patreon.com/seriouspod Follow us on Twitter: @seriouspod Facebook:  https://www.facebook.com/seriouspod For comments, email thomas@seriouspod.com Questions, Suggestions, Episode ideas? email: haeley@seriouspod.com  

Curious City - Deconstructing The Chicago-Style Hot Dog

Chicago-style hot dogs are a beloved culinary masterpiece: A snappy all-beef wiener, steamed poppy seed bun, yellow mustard, chopped onions, neon-green relish, two slices of tomato, a dill pickle spear, two sport peppers and a final whoosh of celery salt.

But how did that unique mix of ingredients come to be? In a special Curious City presentation, Chicago’s premier hot dog expert breaks down the history of each ingredient. It’s a tale of immigration to Chicago’s Maxwell street neighborhood a century ago. Click here for the full story.

Monica Eng is a WBEZ food and health reporter. Follow her at @monicaeng

50 Things That Made the Modern Economy - Robot

Robots threaten the human workforce, but their ubiquity and growing competence make them crucial to the modern economy. In 1961 General Motors installed the first Unimate at one of its plants. It was a one-armed robot resembling a small tank that was used for tasks like welding. Now, as Tim Harford explains, the world’s robot population is expanding rapidly (the robot “birth rate” is almost doubling every five years) and, coupled with rapid advances in artificial intelligence, robots are changing the world of work in unexpected ways. (Photo: Robot, Credit: Toru Yamanaka/Getty Images)

CrowdScience - Can Trees Help us Fight Air Pollution?

Trees take in carbon dioxide but they also convert some of the toxic gases in our air. How much help can trees give us in fighting air pollution and could where we plant them make an even bigger difference? Crowdscience reports from the side of some busy roads on how canopy coverage may be part of the answer. At a lab in Louisiana one scientist is putting oak leaves through their paces to find out how effective they are at cleaning our air.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk

Presenter: Marnie Chesterton Producer: Marijke Peters

(Image: Trees in a forest Credit: Julian Stratenschulte/Getty Images)