Many believe the planet's energy needs can be provided carbon-free, with solar, wind, and water carrying the load. Coal, oil, and natural gas use will fade away. It’s an appealing vision. But the numbers don’t back it up for seven billion people, many looking in on the comfortable lifestyles of the wealthy countries and thinking: “What about us?”. Humanity needs a mix of energy sources, and nuclear energy is a carbon-free power source that can deliver at scale. I’m a nuclear physicist by training, recently retired from North Carolina State University, with interests in cosmology, energy research and policy, science education, and neutron and neutrino physics.
I wrote
Carbon-Free Power: The Role of Small Modular (Nuclear) Reactors
The numbers in physics have always fascinated me. Many think of physics as full of impenetrable equations. Some, like E=mc squared and F=ma, are associated with famous names, Einstein and Newton. But on their own, equations don’t tell us what’s happening. Numbers breathe life into equations, giving meaning to the symbols. In Rees’s beautiful book, he identifies six numbers that have led to the universe around us and to the extraordinary complexity of the world we live in.
And they are just numbers, like 3 or 0.007. Only six numbers? So few seem astonishing. Modern physics and cosmology do identify others. But in all cases, the conclusion is that you can’t change them, not even a little, and still end up with a universe and world like ours.
Numbers really matter if you are trying to understand how complex societies organize themselves. We would think very differently (or not at all!) if the planet's population was seven million, not seven billion.
I really appreciate how Smil takes the big picture and then breaks it down into manageable bites with all-important numbers: where do we get our energy, where do we get our food, and what are the critical materials we need? That last topic may surprise you. He comes up with four: ammonia, cement, steel, and plastics. And ammonia tops the list for its impact on food production. Nobody loves the other three, especially not plastics. But if you want to promote an alternative lifestyle for everyone on the planet, put in the numbers. Can it work at the scale needed?
'There is no author whose books I look forward to more than Vaclav Smil' Bill Gates __________
We have never had so much information at our fingertips and yet most of us don't know how the world really works. This book explains seven of the most fundamental realities governing our survival and prosperity. From energy and food production, through our material world and its globalization, to risks, our environment and its future, How the World Really Works offers a much-needed reality check - because before we can tackle problems effectively, we must understand the facts.
Putting in the numbers is what Gates does in his book. Climate change is real, no question. How to address it is where the controversy comes in. I really like that from the outset, Gates proposes five questions to consider whenever climate change is discussed: what fraction of the annual carbon dioxide emission are you removing? What’s your plan for cement? How much electrical power will be needed, what’s the cost, and how much space will it take up?
But he’s optimistic that zero emissions can be reached. He argues there are many options to explore, including nuclear, and says, contrary to much of the news reporting, don’t focus on 2030; focus instead on 2050 to give the best solutions time to emerge.
In this urgent, authoritative book, Bill Gates sets out a wide-ranging, practical - and accessible - plan for how the world can get to zero greenhouse gas emissions in time to avoid a climate catastrophe.
Bill Gates has spent a decade investigating the causes and effects of climate change. With the help of experts in the fields of physics, chemistry, biology, engineering, political science, and finance, he has focused on what must be done in order to stop the planet's slide toward certain environmental disaster. In this book, he not only explains why we need to work toward net-zero emissions…
I can’t say I love this book since I don’t agree with his premise: wind, water, and solar can do it all. But to be fair, he’s right that cleaning up the air by removing coal plants would be a boon to global health everywhere.
He makes an appealing case. But his vision of the future founders for me on the intermittency issue of his power sources, particularly wind and solar. How will they scale to match the needs? Where is the battery technology to support the downtime? What are the environmental impacts? How will the power get from producer to user? He is opposed to nuclear power and yet it is the closest thing to a plug-to-plug replacement for the coal fired plants we all agree should be phased out.
The world needs to turn away from fossil fuels and use clean, renewable sources of energy as soon as we can. Failure to do so will cause catastrophic climate damage sooner than you might think, leading to loss of biodiversity and economic and political instability. But all is not lost! We still have time to save the planet without resorting to 'miracle' technologies. We need to wave goodbye to outdated technologies, such as natural gas and carbon capture, and repurpose the technologies that we already have at our disposal. We can use existing technologies to harness, store, and transmit energy…
This book, written for lay readers, was originally published in France, which generates 40% of its electricity from nuclear power. It is a deep dive into electricity generation (megawatts) and nuclear weapons (megatons). The book my colleague and I wrote is, in a sense, an update emphasizing the developments of the last decade in fail-safe reactors. In these so-called small modular reactors, safety is controlled by laws of physics (gravity drives convection, driving cooling that never turns off), and construction techniques go beyond expensive one-of-a-kind reactors to the cost-controlled modular construction technologies pioneered in aerospace industries and the like.
Megawatts and Megatons are tough and, at times, uncomfortable topics to consider. However, democratic societies need informed citizens to function effectively. We should make up our own minds about issues. We cannot leave it to a few specialists or loud voices to tell us what to think.
For nearly sixty years the menace of nuclear war has hung over humanity, while at the same time the promise of nuclear energy has enticed us. In Megawatts and Megatons, two of the world’s most eminent physicists—French Nobel Prize laureate Georges Charpak and American Enrico Fermi Award–winner Richard L. Garwin—assess with consummate authority the benefits of nuclear energy and the dangers of nuclear weaponry.
Garwin and Charpak begin by elucidating the discoveries that have allowed us to manipulate nuclear energy with increasing ease. They clearly and concisely explain complex principles of fission and fusion pertaining to nuclear weaponry and the…
What will we make of the new world order in electrical energy production? Solar and wind are the established low-cost leaders, but these are highly variable energy sources. For 24/7 electrical power, something else must fill the gaps. Only a few are both economical and carbon-free.
Countries everywhere are grappling with the challenges of providing resources to people who are increasingly aware that energy is the key driver to improving living standards. No source of energy comes without hidden costs and environmental impacts. We discuss the often-raised concerns about nuclear power–cost, safety, nuclear proliferation, waste disposal–and leave it to readers to decide whether nuclear power, specifically the new generation of small modular reactors, should be in the mix.
Unlike the typical tales of a flawless fighting unit, this story follows Commander Kami Trenn and her ragtag squad of mixed-race space marines.
Dog Squad fights a mysterious adversary whose presence remains shrouded in secrecy. The fate of the universe hangs in the balance, but will they be able to make enough of a difference?
Can they hope to uncover the enemy’s plans for galactic dominance before the Alliance falls? Maybe. If they can stop fighting each other.
Across the void formed by two galactic spiral arms, vast forces face each other.
The tenuous Alliance, sixty civilizations united only by fear of invasion, prepare to resist the encroachment of their as-yet unseen enemy, known only as the Creeps.
The Void has become a battleground. Three thousand light years across, and populated by a scattering of ten thousand ‘dark’ worlds, it is the Alliance’s last chance to protect their way of life. Self-destructive, robotic drones pour across the Void in ever-increasing numbers, testing the Alliance fleets to breaking point.
