More than a decade ago scientist Dirk Schulze-Makuch plotted nine plausible ways by which humanity would cease to exist. Now he's revised his list and he joins us to share his updated predictions. Also, why some philosophers argue the planet would be enhanced by human extinction. And how doomsday scenarios from the Cold War still influence environmental thinking.

Citizen scientists across the world have joined forces to map the microplastic crisis in our oceans. It comes as a UN agency moves to create a global treaty to end plastic pollution. Also, the idea that trees can communicate via extensive networks of underground fungi is increasingly popular, but is it correct? New research casts doubt on the extent of the claim. And, replacing cargo planes with drones – the dream of a European drone cargo airline

Beijing likes to trumpet its economic clout. And as the second largest economy in the world there's no denying its power and influence. But the Chinese economy is a "black box" according to noted historian, Frank Dikötter, which even senior Chinese officials don't fully understand. It's an economic cauldron powered by massive debt, political spin and ideological dogma – a unique fusion of ersatz capitalism and rigid central planning. And unless we in the West get a better understanding of its complexity, global future prosperity is far from assured.

Understanding the universe isn't just about visually mapping celestial bodies, it's also about listening to the heavens. Data sonification takes astronomical data and turns it into sound. It could help find new patterns in the huge amount of digital information. And it's a way of enhancing astronomy by promoting greater engagement and accessibility — a musical mix of science, art and cold, hard data.

As food security issues increase across the world, expenditure on agri-food research and development is going the other way – in fact, funding in some western countries is now back at 1980s levels. We also hear about a refrigeration initiative in Rwanda that could help increase food nutrition levels in the developing world and significantly cut food wastage.

Are attitudes towards drinking changing as we learn more about the impact alcohol can have on our bodies? Drinking has been part of our social and cultural activities for centuries. But cultural norms appear to be shifting. So, could alcohol go the way of cigarettes and become socially unacceptable?

The Arctic permafrost is melting, and ancient viruses and bacteria are gradually being freed from the ice. The risks are significant, and it's only one of several possible sources for the next pandemic. But scientists and researchers are working to identify potential threats and better prepare the world for future pandemics.

Bribery involves using money to try and buy a person's favour, but what do you call it when someone uses their resources not to win someone over, but to destroy their political career? Until now, it's had no name. But James D'Angelo, from the Congressional Research Institute in the US, has just invented one . He calls it "brubery" – and it's threatening the very future of Western politics, he says. Also, high tech largess or digital colonialism ? Seeing global tech's expansion from a very different set of eyes.

Our modern understanding of innovation isn't modern at all, it turns out. Historian, Iwan Rhys Morus, says we're being held back by Victorian-era notions of the future as a land to be conquered; and the lone-genius inventor as the standard bearer of technological advance. Which might explain why research productivity is now sharply declining, despite a substantial rise in research investment.

Clive Thompson has invented a new search tool called the Weird Old Book Finder. It's about… finding weird old books, what else? It's also about embracing serendipity and breaking free of algorithmic shackles. Also, why the development of Google Glass was both a cautionary tale and a punchline; and the vulnerabilities of super fast finance.