Escape to Mars after we’ve trashed the Earth?

find-another-planet-climate-changeThe idea that we can go to Mars is touted by NASA, Elon Musk, and so many others that this dream seems just around the corner.  If we destroy our planet with climate change, pollution, and so on, no problem, we can go to Mars.

But as Ugo Bardi points out in his book Extracted: How the Quest for Mineral Wealth Is Plundering the Planet we already have gone to another planet by exploiting Earth so ruthlessly that we have changed our planet into another world.

“The planet has been “plundered to the utmost limit, and what we will be left with are only the ashes of a gigantic fire. We are leaving to our descendants a heavy legacy in terms of radioactive waste, heavy metals dispersed all over the planet, and greenhouse gases—mainly CO2—accumulated in the atmosphere and absorbed in the oceans. It appears that we found a way to travel to another planet without the need for building spaceships.  It is not obvious that we’ll like the place, but there is no way back; we’ll have to adapt to the new conditions. It will not be easy, and we can speculate that it will lead to the collapse of the structure we call civilization, or even the extinction of the human species”.

Go to Mars?  Really?  Been there, done that on Earth, and it didn’t work out: Biosphere 2

Remember the $250 million 3.14 acre sealed Biosphere 2 complex near Tucson, Arizona?  It was built to show how colonists could survive on Mars and other space colonization but they only made it for 2 years ON EARTH.

Eight people sealed themselves inside in 1991, planning to live on the food they grew, recycled water, and the oxygen made by plants.

Some of the reasons the Biosphere failed are:

  • Oxygen fell from 20.9% to 14.5%, the equivalent of 13,400 feet elevation and after 18 months oxygen was pumped in
  • Carbon dioxide levels fluctuated wildly
  • Pests ran riot, especially crazy ants, cockroaches, and katydids. Nematodes and broad mites attacked the crops. Most of the other insect species went extinct.
  • Not enough food could be grown
  • It cost $600,000 a year to keep it cool
  • Extinction: The projected started out with 25 small vertebrates but only 6 species survived
  • Species included to pollinate plants such as hummingbirds and honey bees died
  • Water systems were polluted with too many nutrients
  • Morning glories smothered other plants
  • The weather was so cloudy the first few months that crops barely grew, leading to the Biospherians breaking into a 3-month supply of food that had been secretly hidden
  • The level of dinitrogen oxide became dangerously high, which can cause brain damage due to a lowered ability to synthesize vitamin B12

Astronauts will suffer damage from Cosmic Radiation

The idea that if we trash our planet, which looks pretty inevitable, we can go to Mars is a common meme today, touted by Elon Musk, Presidents Obama and Trump, Richard Branson, Stephen Hawking, NASA and others keep hope alive that we can do this.

But we can’t – cosmic radiation in space is simply to harmful to the human body.  We can’t really bombard humans with the densely ionizing radiation found in space,  but mice who’ve been through this get dementia, suffer significant long-term brain damage, have cognitive impairments, lose memory and learning ability, critical decision making and problem solving skills, neuronal damage, and other cognitive defects (Parihar 2015, 2016).

Other studies have shown studies have shown the health risks from galactic cosmic ray exposure to astronauts include cancer, central nervous system effects, cataracts, circulatory diseases and acute radiation syndromes.

A recent study has shown that the risk of cancer is actually twice as high as what previous models had estimated for a Mars mission.

Oh, and this just in. It is likely deep space bombardment by galactic cosmic radiatoin could not only damage gastrointestinal tissue, but increase the risk of tumors in the stomach and colon (Kumar 2018).

And going to space deforms brain tissue, perhaps permanently (Daley 2018).

The toxins in the soil will kill humans, plants, and bacteria

If there’s any life on Mars, it’s deep down because there are three toxins in the soil inimical to life — perchlorates, iron oxides, and hydrogen peroxide. The high levels of perchlorate found on Mars would be toxic to humans and almost certainly breathed in as very fine dust particles entered space suits or habitats.  Plants would be poisoned too, and even if a way were found to get these toxins out of the soil it wouldn’t matter, there are no nutrients in the soil.


And that’s just the tip of the iceberg of problems with going to Mars which Mary Roach’s delightful and hilarious book explains in “Packing for Mars“.

Rocket propulsion depends on fossil fuels, yet here we are at the cusp of the end of the oil age.  In a hundred years, they’ll be gone and we won’t be able to get to Mars or the Moon.

If only people appreciated how marvelous our planet is, and what a shame it would be if we destroyed our species, we may be the only intelligent, conscious life in the universe  (see Rare Earth: Why Complex Life is Uncommon in the Universe).

Poetry says it best: “This Splendid Speck” by Paul Boswell

There are no peacocks on Venus,
No oak trees or water lilies on Jupiter,
No squirrels or whales or figs on Mercury,
No anchovies on the moon;
And inside the rings of Saturn
There is no species that makes poems
and Intercontinental missiles.

Eight wasted planets,
Several dozen wasted moons.
In all the Sun’s half-lighted entourage
One unbelievable blue and white exception,

This breeding, feeding, bleeding,
Cloud-peekaboo Earth,
Is not dead as a diamond.

This splendid speck,
This DNA experiment station,
Where life seems, somehow,
To have designed or assembled itself;
Where Chance and Choice
Play at survival and extinction;
Where molecules beget molecules,
And mistakes in the begetting
May be inconsequential,
Or lethal or lucky;

Where life everywhere eats live
And reproduction usually outpaces cannibalism;
This bloody paradise
Where, under the Northern lights,
Sitting choirs of white wolves
Howl across the firmament
Their chill Te Deums.

Where, in lower latitudes, matter more articulate
Gets a chance at consciousness
And invents The Messiah, or The Marseillaise,
The Ride of the Valkyries, or The Rhapsody in Blue.

This great blue pilgrim gyroscope,
Warmer than Mars, cooler than Venus,
Old turner of temperate nights and days,
This best of all reachable worlds,
This splendid speck.

For more information see the 2013 NewScientist article “Biosphere 2: saving the world within the world” and Wiki.


Cucinotta, F., A., et al. 2017. Non-Targeted Effects Models Predict Significantly Higher Mars Mission Cancer Risk than Targeted Effects Models. Scientific Reports.

Daley, J. October 26, 2018. Hanging Out in Space Deforms Brain Tissue, New Cosmonaut Study Suggests. While gray matter shrinks, cerebrospinal fluid increases. What’s more: These changes do not completely resolve once back on Earth.

Kumar, S. et al., 2018. Space radiation triggers persistent stress response, increases senescent signaling, and decreases cell migration in mouse intestine. Proceedings of the National Academy of Sciences.

Parihar, V. K. 2015. What happens to your brain on the way to Mars. Science advances.

Parihar, V. K., et al. 2016. Cosmic radiation exposure and persistent cognitive dysfunction. Scientific Reports.

Alice Friedemann  author of “When Trucks Stop Running: Energy and the Future of Transportation”, 2015, Springer and “Crunch! Whole Grain Artisan Chips and Crackers”. Podcasts: Derrick Jensen, Practical Prepping, KunstlerCast 253, KunstlerCast278, Peak Prosperity , XX2 report

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5 Responses to Escape to Mars after we’ve trashed the Earth?

  1. Here’s a TED talk (Jan 14, 2016) on the inadvisability of looking to Mars as a place we could live:

    “Stellar astronomer and TED Senior Fellow Lucianne Walkowicz works on NASA’s Kepler mission, searching for places in the universe that could support life. So it’s worth a listen when she asks us to think carefully about Mars. In this short talk, she suggests that we stop dreaming of Mars as a place that we’ll eventually move to when we’ve messed up Earth, and to start thinking of planetary exploration and preservation of the Earth as two sides of the same goal. As she says, ‘The more you look for planets like Earth, the more you appreciate our own planet.'”

  2. If humans ever go to Mars, it would likely be a one way trip.

    A suicide mission.

    A friend who worked at Greenpeace when the “Biosphere 2” was built wondered if it was really meant to test if the billionaires could build domed cities for themselves. Surely the smarter members of the elites understand we’re wrecking our atmosphere …

  3. Gregg Senne says:

    Something I have yet to read about is whether or not humans can reproduce on Mars. Perchlorate is a metabolic disrupter in small concentrations and outright toxic if ingested in quantity. The radiation issue starts before conception with damaged gametes and continues through gestation when cell division is rapid. I can’t help but wonder if subsequent generations of humans born off world will be subject to high rates of infant mortality and debilitating birth defects. Imagine neurological problems that reduce IQ by some percentage with each generation. In a few generations a Mars colony would be overrun with people who would be an extreme drain on resources. Could a society function with a 20% autism rate? I would expect cancer rates to ratchet up, also. What sort of treatment could cancer patients expect on Mars? Euthanasia perhaps? If colonization is predicated on a one-way trip scores of sick people wanting to return would be a major disruption.

    • energyskeptic says:

      I suspect the astronauts will die on the way or shortly after trying to colonize given all the issues. Plus I’ve read that only older, probably past reproductive age, volunteers would be sent because of all the health hazards. But I expect that fossil fuels will be growing scarce, which are needed to go anywhere or make hydrogen fuel, long before anyone even attempts to go to Mars. Basically the excitement generated diverts huge amounts of science research money to NASA that could have been spent better across the thousands of other scientific specialties.

      • Gregory Ross says:

        Mars is not the only fantasy. Jeff Bezos envisions us moving heavy industry to space and setting up colonies there to ease the population and pollution burden. The bad sign is, nobody’s laughing. I fear that society’s puerile fascination with hi-tech, space-travel and reverence for CEOs and entrepreneurs could be a recipe for disaster.

        Popular science did more to dispel religious and creationist myths in the West than decades of communism did in the East. Nevertheless, I suspect that popular science might also have incubated a climate of intellectual levity that translates to a humongous waste of money and resources, and accentuated the tendency for techno-optimism.

        By the way, remember when there was a discussion about whether your book can be found online and you tried looking but didn’t find it? Well, it turns out that Library Genesis, the bane of academic and science publishing, has an illegal copy of “When Trucks Stop Running”.