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If (or maybe when) we find alien life in the universe, will it look like us? As telescopes become bigger, our ability to peer into the cosmos is only getting better. So the question may not be “will we find something?” but rather “what exactly should we be looking for?”
Lisa Kalteneggar is an astrophysicist and founding director of Cornell University's Carl Sagan Institute. She even works out of Sagan’s old office and shares the same optimism and enthusiasm he brought to the search for extraterrestrial life. 
Abby Beall speaks to her about her new book Alien Earths: Planet Hunting in the Cosmos, which takes readers on a cosmic adventure to faraway exoplanets with oceans of lava and multiple suns. 
Through the conversation Lisa explains how Earth’s geological history can help inform our search for life, while acknowledging alien life may not look the same as us. She discusses the technology that has allowed us to enter a new epoch of exploration – and what technological advancements are needed to help advance our search for alien life. And she examines the alien worlds that feature in various science fiction worlds, like those in Star Wars and Avatar, and whether they could actually exist somewhere in the universe.
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From Dune to The Three Body Problem, is science fiction having a moment? Attention to the genre, as well as TV and films based on it, seems to have exploded in the past few years. With sci-fi often getting a bad rap, it’s time to ditch the snobbery and celebrate its complexity and diversity. And who better to do this with than New Scientist’s science fiction columnist – and our former editor – Emily H. Wilson?
Wilson is a journalist and author. In 2023 she published Inanna, the first of The Sumerians, a trilogy set in the ancient civilisation of Sumer. The books are an epic, speculative retelling of some of the oldest myths ever recorded.
In this episode, Rowan Hooper speaks to Wilson about the enduring popularity of the genre, and why you should be proud to call yourself a science fiction fan. Plus, the pair share loads of recommendations and explore sci-fi’s many different sub-genres, from climate fiction to cyberpunk.
You can learn more about Emily’s trilogy, The Sumerians, here.
To read about subjects like this and much more, visit newscientist.com.
Books mentioned:
- Three Body Problem, Cixin Liu
- Children of Time, Adrian Tchaikovsky
- Ancillary Justice, Anne Leckie
- Annie Bot, Sierra Greer
- Dune, Frank Herbert
- The Chrysalids, John Wyndham
- Day of the Triffids, John Wyndham
- The Dispossessed, Ursula K. Le Guin
- The Left Hand of Darkness, Ursula K. Le Guin
- The Man in the High Castle, Philip K. Dick
- Neuromancer, William Gibson
- Burning Chrome, William Gibson
- Mars, Kim Stanley Robinson
- Red Moon, Kim Stanley Robinson
- 2312, Kim Stanley Robinson
- The Ministry for the Future, Kim Stanley Robinson
- Parable of the Sower, Octavia Butler
- Patternmaster, Octavia Butler
- The Broken Earth, N. K. Jemisin
- Middlemarch, George Eliot
- Impressions of Theophrastus Such, George Eliot
- Service Model, Adrian Tchaikovsky
- Autonomous, Annalee Newitz
- Excession, Iain M. Banks
- A World Out of Time, Larry Niven
- Ender's Game, Orson Scott Card
- The Ballad of Halo Jones, Alan Moore and Ian Gibson
- Tank Girl, Alan Martin and Jamie Hewlett

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How do we understand the stakes of climate change, and communicate them? As we’re facing the consequences of climate change and our historical inaction as a species, how do we come to terms with the reality and uncertainty of our situation?
In H is for Hope: Climate Change from A to Z, Journalist and Pulitzer Prize-winning author Elizabeth Kolbert breaks things down for us, alphabetically. She dissects the narratives around climate change, from sobering facts about our warming planet, to innovations to fuel our optimism.
In this episode, Kolbert reminds us how dangerous our current situation is, and what we are missing in this fight – including gaps in our understanding of how fast the climate is changing. Plus, the role of narratives in shaping how we decide to act. 
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How much faith should we be putting in artificial intelligence? As large language models and generative AI have become increasingly powerful in recent years, their makers are pushing the narrative that AI is a solution to many of the world’s problems.
But Meredith Broussard says we’re not there yet, if we even get there at all. Broussard is the author of More than a Glitch: Confronting Race, Gender, and Ability Bias in Tech. She coined the term “technochauvinism,” which speaks to a pro-technology bias humans often have, where we believe technological solutions are superior to anything else. 
In this episode, she tells New Scientist’s Sophie Bushwick that our trust in AI systems could have devastating consequences.
From discriminatory mortgage-approval algorithms, to the racial biases of facial recognition technology, to the misinformation that appears in chatbots like ChatGPT, Broussard explains why there’s no such thing as trustworthy AI. And she discusses the need for greater education about AI, to help us separate reality from marketing.
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Half of the human population undergoes the menstrual cycle for a significant proportion of their lifetimes, yet periods remain a taboo topic in public and private life. And that makes it harder both to prioritise necessary scientific research into conditions like endometriosis and for people to understand the basics of how their bodies work.
Blood: The Science, Medicine, and Mythology of Menstruation is gynaecologist Jen Gunter’s latest book. In this practical guide, she dispels social, historical and medical myths about menstruation and offers answers to your biggest period-related questions – including why we menstruate in the first place, when a missed period is a health concern and “how heavy is too heavy?”
In this episode, Christie Taylor speaks to Gunter about how humans are part of an exclusive club of menstruators in the animal kingdom, the persisting social stigma around menstruation and menopause, and why these processes remain under-researched in science despite their vast importance. Plus, a call from Gunter to take seriously the very individual and sometimes painful experiences people may have with their periods, while also creating more access to menstrual care.  
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Fish you wear like a gas mask, moss that turns a robot sentient and critters that will eat your rash – all these oddities and more cohabit on the planet Vesta, the setting for the animated miniseries Scavengers Reign, where a group of human space travellers must innovate with what they find in the landscape to survive. While all this sounds fantastical, there are many parallels with Earth’s ecosystem and the way we regularly borrow technology from the natural world. 
New Scientist physics reporter Karmela Padavic-Callaghan often writes about biomimicry and bio-inspired devices and has been fascinated by the symbiotic, connected ecosystem the show portrays.In this episode, they speak to biophysicist Saad Bhamla and ecologist Meghan Brown about the the science that underpins the series and how surprisingly close to reality some of the ecological interactions are. Plus how even fantastical fiction can shape a scientific mind.
To read about subjects like this and much more, visit newscientist.com.

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