Wednesday, May 06, 2020

Facts about Climate Change and Loss of Bio-diversity


Some examples of what we, as a specie, are currently doing against the ecosystem that supports us:
  • Earth has lost half of its wildlife in the past 40 years, says WWF (Oct 2018) 
  • Humans just 0.01% of all life but have destroyed 83% of wild mammals
  • US and Canadian scientists estimate final extinction of all edible fish by 2048
  • In recent decades, it has been estimated that between 30% and 50% of coral reefs have been severely or completely destroyed by the impact of local factors and global climate change
  • A meta-analysis covering 13,000 articles in conservation biology shows that life is in free fall in all sectors, the global situation of the planet is extermination
  • In a single decade, the living branch that has the most species and the most individuals, the biomass has dropped by 67%
  • In 50 years 500 million birds have disappeared from the European sky, and 3 billions in US and Canada 
  • 60% of wild animal populations have collapsed
  • 80% of the flying insects were killed in Germany and the large species of freshwater fish probably declined by 88%
  • 1000 billion marine animals die each year but beware of fishing and industrial over fishing via ships that travel 35,000 times the diameter of the earth every year
  • Humans make up 0.01 percent of the living on earth, but have caused 85% of deaths since the start of the industrial era
  • France loses between one and three departments of blank spaces every ten years
  • It is estimated on a global scale that only 20% of the land area has not been drastically impacted negatively by human presence and activity
  • We can therefore imagine that the warming is not of anthropogenic origin which is not due to man and we can quantify the probability that it is so it is 0.00005%
  • The share of humans who will be subjected to life-threatening heat waves of more than twenty days will amount to 74% of the population at the end of the century
  • Officially 44 countries are already today in a situation of strong or extreme water stress
  • The exponential growth regime of resources use in which we currently find ourselves is what is called instability. It is a condition that almost necessarily leads to a system crash. We are therefore in the process of organizing the crash of the life system on planet Earth!
  • The thawing of permafrost or permafrost is obviously 50 times faster than expected and the methane it releases and 20 times more efficient than carbon dioxide from the point of view of the greenhouse effect the more they release pathogens than we thought have disappeared!
  • The ocean of plastic is three times the size of France is to date its mass is still increasing exponentially at the current rate the production of waste will increase by 70% in the next 30 years
  • Every year 80,000 square kilometers of forest are lost. Primary forests are likely to die out in the next decade in Paraguay, Laos and Equatorial Guinea
  • Only 46% of the trees left on earth before humanity started farming twelve thousand years ago
  • The melting of mountain glaciers is tragic because it will first give far too much fresh water and then far too little to around 2 billion humans who depend directly on it
  • These glaciers as well as the permafrost contain colossal quantities of mercury around 800,000 tonnes which will be poured into water which was until then drinkable.
  • In the summer of 2019, 3 million hectares of Siberian forest went up in smoke while in one day 11 billion tonnes of ice melted in Greenland
  • 6 million hectares are being sprayed in Australia with more than a billion animals dead without counting the very numerous invertebrates
  • Pollution kills around 800,000 people a year
  • Each year 89 million more humans need to be fed, while 40% of the world's food is wasted
  • In two decades Africa has lost 15% of its virgin territories South America has lost 30% these are gigantic figures and the trend is nowadays accelerating
  • In intensive agriculture 98% of the pesticides used reach another cause another destination than their explicit target. In the United States it is estimated that they kill 62 million birds per year and it affects humans as well with fatal consequences via congenital diseases and cancer



If we don't act now, the climate and the bio-diversity are both going to collapse on us.

We can decide to ignore it and lie to ourselves to continue to eat meat, polluted veggies, toxic aliments to drive our metal monsters on the road, in the air and on the sea, we can continue to use 10 times the energy that we really need to buy crap manufactured at the other end of the World or we can become adults and admit that if we cut the branch we are sitting on, we will fall...









Top 9 things to do against Climate Change


Climate change and bio-diversity collapse are potentially lethal for human kind. 

Earth has lost half of its wildlife in the past 40 years, says WWF (Oct 2018) 
Humans just 0.01% of all life but have destroyed 83% of wild mammals
US and Canadian scientists estimate final extinction of all edible fish by 2048
In recent decades, it has been estimated that between 30% and 50% of coral reefs have been severely or completely destroyed by the impact of local factors and global climate change
In 2070 between 1.5 and 3 BILLION people won't be able to survive where they live today!



What can be done? Is it enough to buy a Tesla, recycle, get rid of plastic bags and straws, to become vegetarian?
It is a good start, but the scale of the problem imposes more drastic measures as prioritized by the Shift Project:
  1. Close all coal-fired power plants

  2. Widespread use of 140 mpg vehicles

  3. Complete the urban transportation revolution

  4. Link major cities with high speed trains

  5. Invent post-carbon heavy industry

  6. Renovate old housing

  7. Major renovation project of public buildings

  8. Develop carbon sequestration 

  9. Transition to sustainable agriculture


That would be a good start!


Green energy is an oxymoron


A lot of people are concerned by climate change, but often they don't go far enough and they want to think that simple solutions could solve complex problems!

But it only requires some elementary maths to understand how wrong it is:

Word wide Energy consumption in 2015 = 159 PWh (14 Gtoe) 
Word wide Energy production in 2015 = 282 PWh (24 Gtoe) 

One photo-voltaic panel can generate 100 W during 7 hours = 700 Wh / day, so it can generate 250 KWh in 1 year

To generate 282 PWh we would need more than 1 trillion photo-voltaic panels (10^12 or 1,000,000,000,000)

And this number has to be multiplied by roughly 20 to account for decentralized power networks, energy storage and charge factor at night time for example! 

So, we need roughly 20 trillions photo-voltaic panels to produce our yearly energy without burning fossil fuels!

  • Problem 1: where do we get the energy to mine, transform the materials, build the panels, transport them and install them? 
  • Problem 2: where do we get all the material to build them? 
  • Problem 3: where do we store so much energy?
  • Problem 4: where do we get the money to pay for these 20 trillions photo-voltaic panels?


Solar power in Nevada - Wikipedia