Babbage from The Economist (subscriber edition)

Scientists are experimenting with different ways to reduce the amount of carbon being emitted into the Earth’s atmosphere. Nilay Shah, of Imperial College London, explains how carbon capture and storage works. And, Wang Jian, a tech chief of Alibaba, on how data can be harnessed to make cities more efficient. Plus, three low-tech innovations that could make a big difference to sustainable living. Kenneth Cukier hostsAdditional music by Chris Zabriskie "Divider" (CC by 4.0)____________________Please subscribe to The Economist for full access to print, digital and audio editions:www.economist.com/radiooffer____________________

As global leaders prepare for the UN climate change summit next week, we debate what changes individuals can make today to help limit the effects of climate change. The Economist’s environment editor, Catherine Brahic, hosts a roundtable with Christiana Figueres, who convenes Mission 2020 to reduce global carbon emissions; Ed Davey, a director of the Food and Land Use Coalition with the World Resources Institute; and Kevin Anderson, professor of energy and climate change in the school of engineering at Manchester University

Flying taxis could soon become commonplace in cities if operators can overcome strict regulations on their use. Journalist Rebecca Fannin explores the future of technology giants in China. And, how can the sound of sand reveal its source? Kenn Cukier hostsextra music by Chris Zabriskie “Divider” (CC by 4.0 UK)

Innovation: it’s more than just a buzzword that companies use when trying to sound dynamic. But what does it actually mean? Some entrepreneurs and economists like Patrick Collison and Tyler Cowen think that it needs to be studied as a science of progress. How can pulling together thinking about this help innovators of the future? And what are companies doing today to try and change the way we work? Kenneth Cukier hosts

Investors are ploughing hundreds of millions of dollars into vertical farming. Could towers of vegetables help feed the world’s growing population? Also, how studying gravitational waves could unlock the deepest mysteries of the universe and prove Einstein wrong. And, network theorist Albert-Laszlo Barabasi explains the science of professional success. Kenneth Cukier hosts

How can understanding the link between gut bacteria and Autism Spectrum Disorder help scientists develop a treatment? Broken heart syndrome, or Takotsubo, is a serious condition that can be caused by the death of a loved one. Scientists have recently discovered a possible link to cancer. Also, could re-training the brain combat chronic breathlessness? Kenneth Cukier hosts

Two treatments for Ebola have emerged from a clinical trial in Africa. Scientists estimate that sea-levels across the globe will rise by 50cm or so in the next 80 years; in some places they could go up by twice as much. Are governments and businesses prepared to deal with the rising tides? And, as face-recognition technology spreads, so do ideas for subverting it. Kenneth Cukier hosts

Can pioneering surgery help delay the menopause and how will it impact women's lives? And, Clara Vu, of Veo Robotics, explains some of the challenges of designing “cobots”, robots that work collaboratively with humans on manufacturing tasks. Also, should people have the right to choose to know if they are a carrier of a hereditary genetic disease? Alok Jha hosts

Record-breaking heatwaves are becoming routine and they are killing people. But many of the potentially life-saving solutions are both low-tech and low-cost. Governments should be doing more. Also, we visit Lake Chad in the Sahel to understand how climate change can fuel conflict. And, droughts or floods, heatwaves or cold snaps, just how responsible is humanity for extreme weather events? Catherine Brahic hosts

Under Satya Nadella, Microsoft has reclaimed its crown as the world’s most valuable listed company. What can other firms learn from its reboot? Also, Reshma Shetty, cofounder of Gingko Bioworks, explains the potential of synthetic biology to harness – and transform – the power of nature. And, British ethicists put police use of artificial intelligence on trial. Alok Jha hosts