Could Biologically Enhancing Our Morality Save Our Species?
As a species, we are prone to weaponizing. There is a famous anecdote from Wulf Schievenhovel, a German anthropologist who was working in the highlands of New Guinea studying a local tribe. One day, he offered two tribesmen a flight in an airplane. They duly accepted but showed up with two large stones. When he asked why, they told him that they wanted to drop them on a neighboring village. Ethologist Frans de Waal later remarked on this story that Schievenhovel had effectively "witnessed the invention of the bomb."
Today you don't have to be Putin or Kim Jong Un to pose an existential threat.
Modern technology has given us access to more than just rocks. In 2011, a Swedish man was arrested after attempting a nuclear fission in his kitchen. And in the inaugural issue of this magazine, my colleague Hank Greely raised a terrifying prospect:
"do-it-yourself hobbyists can use CRISPR [gene editing]… to change the genomes of whole species of living things – domestic or wild; animal, vegetable, or microbial – cheaply, easily, and before we even know it is happening."
In science fiction, it is typically governments that take over technologies and use them for evil. That risk is of course no fiction. It is an ongoing problem that we have addressed through institutions: democracies, constitutions, legal systems and international treaties, and groups working together as checks and balances. It isn't perfect, but it has worked (so far).
Today you don't have to be Putin or Kim Jong Un to pose an existential threat. We are rapidly acquiring the technological ability for individuals and groups not just to cause major harm, but to do so exactly as Hank said: "cheaply, easily, and before we even know it is happening."
How should we address this problem? Together with Ingmar Persson, a fellow philosophy professor at Gothenburg, Sweden, I have argued that while education, institutions and good policing are important, we may need to think more radically.
We could adapt our biology so that we can appreciate the suffering of foreign or future people in the same instinctive way we do our friends and neighbors.
We evolved, along with the New Guinea tribesmen, to care about our small group and to be suspicious of outsiders. We evolved to cooperate well within our group, at a size where we could keep an eye on free riders. And we evolved to have the ability, and occasionally the desire to harm others, but with a natural limit on the amount of harm we could do—at least before others could step in to prevent, punish or kill us.
Our limitations have also become apparent in another form of existential threat: resource depletion. Despite our best efforts at educating, nudging, and legislating on climate change, carbon dioxide emissions in 2017 are expected to come in at the highest ever following a predicted rise of 2 percent. Why? We aren't good at cooperating in larger groups where freeriding is not easily spotted. We also deal with problems in order of urgency. A problem close by is much more significant to us than a problem in the future. That's why even if we accept there is a choice between economic recession now or natural disasters and potential famine in the future, we choose to carry on drilling for oil. And if the disasters and famine are present day, but geographically distant, we still choose to carry on drilling.
So what is our radical solution? We propose that there is a need for what we call moral bioenhancement. That is, for seeking a biological intervention that can help us overcome our evolved moral limitations. For example, adapting our biology so that we can appreciate the suffering of foreign or future people in the same instinctive way we do our friends and neighbors. Or, in the case of individuals, in addressing the problem of psychopathy from a biological perspective.
There is no reason in principle why humans could not be genetically modified...to make them kinder, happier, more conscientious, altruistic and just.
We have been dramatically successful at modifying various moral characteristics of non-human animals. Over ten thousand years or so, we have turned wolves into dogs by selective breeding, and those dogs into breeds with behavioural as well as physical characteristics: certain breeds can be faithful, hard working, good tempered and intelligent (or the opposite). Scientists have manipulated the expression of genes in prairie voles to cause them to form a mate bond more quickly, and in monkeys to make them work harder. There is no reason in principle why humans could not be genetically modified using gene editing, or their brains modified in other ways, to make them kinder, happier, more conscientious, altruistic and just.
One objection is that this is a pipe dream: even if it is acceptable to do this, it is so unlikely to be achievable, it is not worth pursuing. However, research has shown that we are already morally modified. This is widely accepted when it comes to negative effects. For example, we all know that alcohol can lead people to aggressive or other destructive behaviours that they would not have countenanced sober. In a 2008 case, a retired UK teacher was cleared of child pornography charges after he successfully argued his behaviour was caused by a drug prescribed for his Parkinson's disease. There is also evidence that we can be morally modified in a more positive direction. For example, SSRIs like Prozac, a class of drugs widely used to treat depression, have been shown to act on healthy volunteers to make them more cooperative and less critical.
Another objection is that we need the negative aspects of our human character. We need people who can fight wars. We need to be able to blot out the suffering of the wider world: to experience it as we would if it applied to our nearest and dearest would be unbearable. This might be so. If aggressiveness and denial, or strong bonding to small communities, are important traits, it is important that we understand how, and to what degree, they should be controlled. It is unlikely that nature has dished out exactly the right levels of all morally relevant characteristics on an individual or population level. We don't claim to have all the answers to what characteristics we need to enhance, and what characteristics we need to diminish. But we see no reason to believe that the status quo is the optimum.
We haven't argued that we should go blindly in now with half-baked moral enhancers, or that we should forget about moral education, or legal solutions. Evolution has a built-in response to existential threats through adaptation. But adaptation takes generations and can't deal with threats that take out a whole population. Some threats are too important —and too urgent—to be left to chance.
Friday Five: The Therapeutic Value of Bonding with Fellow Sports Fans
The Friday Five covers five stories in research that you may have missed this week. There are plenty of controversies and troubling ethical issues in science – and we get into many of them in our online magazine – but this news roundup focuses on new scientific theories and progress to give you a therapeutic dose of inspiration headed into the weekend.
This episode includes an interview with Dr. Helen Keyes, Head of the School of Psychology and Sports Science at Anglia Ruskin University.
Listen on Apple | Listen on Spotify | Listen on Stitcher | Listen on Amazon | Listen on Google
- Attending sports events is linked to greater life satisfaction
- Identifying specific brain tumors in under 90 seconds with AI
- LSD - minus hallucinations - raises hopes for mental health
- New research on the benefits of cold showers
- Inspire awe in your kids and reap the benefits
Matt Fuchs is the editor-in-chief of Leaps.org and Making Sense of Science. He is also a contributing reporter to the Washington Post and has written for the New York Times, Time Magazine, WIRED and the Washington Post Magazine, among other outlets. Follow him @fuchswriter.
Scientists and dark sky advocates team up to flip the switch on light pollution
As a graduate student in observational astronomy at the University of Arizona during the 1970s, Diane Turnshek remembers the starry skies above the Kitt Peak National Observatory on the Tucson outskirts. Back then, she could observe faint objects like nebulae, galaxies, and star clusters on most nights.
When Turnshek moved to Pittsburgh in 1981, she found it almost impossible to see a clear night sky because the city’s countless lights created a bright dome of light called skyglow. Over the next two decades, Turnshek almost forgot what a dark sky looked like. She witnessed pristine dark skies in their full glory again during a visit to the Mars Desert Research Station in Utah in early 2000s.
“I was shocked at how beautiful the dark skies were in the West. That is when I realized that most parts of the world have lost access to starry skies because of light pollution,” says Turnshek, an astronomer and lecturer at Carnegie Mellon University. In 2015, she became a dark sky advocate.
Light pollution is defined as the excessive or wasteful use of artificial light.
Light-emitting diodes (LEDs) -- which became commercially available in 2002 and rapidly gained popularity in offices, schools, and hospitals when their price dropped six years later — inadvertently fueled the surge in light pollution. As traditional light sources like halogen, fluorescent, mercury, and sodium vapor lamps have been phased out or banned, LEDs became the main source of lighting globally in 2019. Switching to LEDs has been lauded as a win-win decision. Not only are they cheap but they also consume a fraction of electricity compared to their traditional counterparts.
But as cheap LED installations became omnipresent, they increased light pollution. “People have been installing LEDs thinking they are making a positive change for the environment. But LEDs are a lot brighter than traditional light sources,” explains Ashley Wilson, director of conservation at the International Dark-Sky Association (IDA). “Despite being energy-efficient, they are increasing our energy consumption. No one expected this kind of backlash from switching to LEDs.”
Light pollution impacts the circadian rhythms of all living beings — the natural internal process that regulates the sleep–wake cycle.
Currently, more than 80 percent of the world lives under light-polluted skies. In the U.S. and Europe, that figure is above 99 percent.
According to the IDA, $3 billion worth of electricity is lost to skyglow every year in the U.S. alone — thanks to unnecessary and poorly designed outdoor lighting installations. Worse, the resulting light pollution has insidious impacts on humans and wildlife — in more ways than one.
Disrupting the brain’s clock
Light pollution impacts the circadian rhythms of all living beings—the natural internal process that regulates the sleep–wake cycle. Humans and other mammals have neurons in their retina called intrinsically photosensitive retinal ganglion cells (ipRGCs). These cells collect information about the visual world and directly influence the brain’s biological clock in the hypothalamus.
The ipRGCs are particularly sensitive to the blue light that LEDs emit at high levels, resulting in suppression of melatonin, a hormone that helps us sleep. A 2020 JAMA Psychiatry study detailed how teenagers who lived in areas with bright outdoor lighting at night went to bed late and slept less, which made them more prone to mood disorders and anxiety.
“Many people are skeptical when they are told something as ubiquitous as lights could have such profound impacts on public health,” says Gena Glickman, director of the Chronobiology, Light and Sleep Lab at Uniformed Services University. “But when the clock in our brains gets exposed to blue light at nighttime, it could result in a lot of negative consequences like impaired cognitive function and neuro-endocrine disturbances.”
In the last 12 years, several studies indicated that light pollution exposure is associated with obesity and diabetes in humans and animals alike. While researchers are still trying to understand the exact underlying mechanisms, they found that even one night of too much light exposure could negatively affect the metabolic system. Studies have linked light pollution to a higher risk of hormone-sensitive cancers like breast and prostate cancer. A 2017 study found that female nurses exposed to light pollution have a 14 percent higher risk of breast cancer. The World Health Organization (WHO) identified long-term night shiftwork as a probable cause of cancer.
“We ignore our biological need for a natural light and dark cycle. Our patterns of light exposure have consequently become different from what nature intended,” explains Glickman.
Circadian lighting systems, designed to match individuals’ circadian rhythms, might help. The Lighting Research Center at Rensselaer Polytechnic Institute developed LED light systems that mimic natural lighting fluxes, required for better sleep. In the morning the lights shine brightly as does the sun. After sunset, the system dims, once again mimicking nature, which boosts melatonin production. It can even be programmed to increase blue light indoors when clouds block sunlight’s path through windows. Studies have shown that such systems might help reduce sleep fragmentation and cognitive decline. People who spend most of their day indoors can benefit from such circadian mimics.
When Diane Turnshek moved to Pittsburgh, she found it almost impossible to see a clear night sky because the city’s countless lights created a bright dome of light called skyglow.
Leading to better LEDs
Light pollution disrupts the travels of millions of migratory birds that begin their long-distance journeys after sunset but end up entrapped within the sky glow of cities, becoming disoriented. A 2017 study in Nature found that nocturnal pollinators like bees, moths, fireflies and bats visit 62 percent fewer plants in areas with artificial lights compared to dark areas.
“On an evolutionary timescale, LEDs have triggered huge changes in the Earth’s environment within a relative blink of an eye,” says Wilson, the director of IDA. “Plants and animals cannot adapt so fast. They have to fight to survive with their existing traits and abilities.”
But not all types of LEDs are inherently bad -- it all comes down to how much blue light they emit. During the day, the sun emits blue light waves. By sunset, it’s replaced by red and orange light waves that stimulate melatonin production. LED’s artificial blue light, when shining at night, disrupts that. For some unknown reason, there are more bluer color LEDs made and sold.
“Communities install blue color temperature LEDs rather than redder color temperature LEDs because more of the blue ones are made; they are the status quo on the market,” says Michelle Wooten, an assistant professor of astronomy at the University of Alabama at Birmingham.
Most artificial outdoor light produced is wasted as human eyes do not use them to navigate their surroundings.
While astronomers and the IDA have been educating LED manufacturers about these nuances, policymakers struggle to keep up with the growing industry. But there are things they can do—such as requiring LEDs to include dimmers. “Most LED installations can be dimmed down. We need to make the dimmable drivers a mandatory requirement while selling LED lighting,” says Nancy Clanton, a lighting engineer, designer, and dark sky advocate.
Some lighting companies have been developing more sophisticated LED lights that help support melatonin production. Lighting engineers at Crossroads LLC and Nichia Corporation have been working on creating LEDs that produce more light in the red range. “We live in a wonderful age of technology that has given us these new LED designs which cut out blue wavelengths entirely for dark-sky friendly lighting purposes,” says Wooten.
Dimming the lights to see better
The IDA and advocates like Turnshek propose that communities turn off unnecessary outdoor lights. According to the Department of Energy, 99 percent of artificial outdoor light produced is wasted as human eyes do not use them to navigate their surroundings.
In recent years, major cities like Chicago, Austin, and Philadelphia adopted the “Lights Out” initiative encouraging communities to turn off unnecessary lights during birds’ peak migration seasons for 10 days at a time. “This poses an important question: if people can live without some lights for 10 days, why can’t they keep them turned off all year round,” says Wilson.
Most communities globally believe that keeping bright outdoor lights on all night increases security and prevents crime. But in her studies of street lights’ brightness levels in different parts of the US — from Alaska to California to Washington — Clanton found that people felt safe and could see clearly even at low or dim lighting levels.
Clanton and colleagues installed LEDs in a Seattle suburb that provided only 25 percent of lighting levels compared to what they used previously. The residents reported far better visibility because the new LEDs did not produce glare. “Visual contrast matters a lot more than lighting levels,” Clanton says. Additionally, motion sensor LEDs for outdoor lighting can go a long way in reducing light pollution.
Flipping a switch to preserve starry nights
Clanton has helped draft laws to reduce light pollution in at least 17 U.S. states. However, poor awareness of light pollution led to inadequate enforcement of these laws. Also, getting thousands of counties and municipalities within any state to comply with these regulations is a Herculean task, Turnshek points out.
Fountain Hills, a small town near Phoenix, Arizona, has rid itself of light pollution since 2018, thanks to the community's efforts to preserve dark skies.
Until LEDs became mainstream, Fountain Hills enjoyed starry skies despite its proximity to Phoenix. A mountain surrounding the town blocks most of the skyglow from the city.
“Light pollution became an issue in Fountain Hills over the years because we were not taking new LED technologies into account. Our town’s lighting code was antiquated and out-of-date,” says Vicky Derksen, a resident who is also a part of the Fountain Hills Dark Sky Association founded in 2017. “To preserve dark skies, we had to work with the entire town to update the local lighting code and convince residents to follow responsible outdoor lighting practices.”
Derksen and her team first tackled light pollution in the town center which has a faux fountain in the middle of a lake. “The iconic centerpiece, from which Fountain Hills got its name, had the wrong types of lighting fixtures, which created a lot of glare,” adds Derksen. They then replaced several other municipal lighting fixtures with dark-sky-friendly LEDs.
The results were awe-inspiring. After a long time, residents could see the Milky Way with crystal clear clarity. Star-gazing activities made a strong comeback across the town. But keeping light pollution low requires constant work.
Derksen and other residents regularly measure artificial light levels in
Fountain Hills. Currently, the only major source of light pollution is from extremely bright, illuminated signs which local businesses had installed in different parts of the town. While Derksen says it is an uphill battle to educate local businesses about light pollution, Fountain Hills residents are determined to protect their dark skies.
“When a river gets polluted, it can take several years before clean-up efforts see any tangible results,” says Derksen. “But the effects are immediate when you work toward reducing light pollution. All it requires is flipping a switch.”