Bjorn Lomborg puts the hype about renewable into perspective:
The world is mostly run on fossil fuels (81%). Nuclear makes up 5%, with 14% from renewables. Solar panels and wind turbines contribute 0.8%.
When you hear 14% renewables, you will likely think ‘wow, things are going pretty well with the switch to renewables’. But these renewables are not the ones you hear about. The biggest contributor is humanity’s oldest fuel: wood.
4.91% is known as biomass as we also burn food (ethanol) and energy forest (trees or woody shrubs) in the rich world. This is, for instance, the American forests, cut down and shipped across the Atlantic to be burnt in European power plants to be called green and CO₂ neutral – of course, that is only true when the new woods have grown up in 50-100 years.
The truth about Anthropogenic Global Warming aka Climate Change
The climate is changing as it always has.
The real question is
whether manmade Carbon Dioxide (CO2) is causing it,
whether it will have the dire consequences predicted and
whether we can or should do anything about it.
The earth has been warming since the Little Ice Age in the 18th century and has not reached the warmth of the Medieval Warm Period.
Since the Little Ice Age, oceans have been rising steadily at 7 inches per century (<0.2 cm/yr.) and glaciers have been steadily receding with no recent acceleration.
Water, as vapor and clouds, is the major climate influence in the atmosphere. Water vapor can hold heat but also produces clouds that reflect heat back out into space. Precipitation from cooler high altitudes also helps in cooling. More clouds, more cooling.
In the narrow band where CO2 absorbs heat reflected from the earth, it has already blocked the escape of most of the heat that it can. Increases in CO2 will have little or no effect on warming.
Warmer oceans hold less CO2 than cooler oceans, so warming causes off gassing. CO2 may be a trailing rather than a leading indicator of warming oceans and climate.
Plants use carbon dioxide for photosynthesis and give off oxygen. Animals use oxygen and exhale carbon dioxide.
Increasing from an assumed 280 ppm to 400 ppm (ppm = parts per million) is still a miniscule amount, but has increased plant growth rates so that forests and oceans have a greening effect that is visible from space. (400ppm = 0.04%)
Greenhouses add CO2 by as much as 10 times normal to increase growth rates
During the Little Ice Age, the sun was quiet with no sunspots aka storms. This happened again around 1850 with a more modest cooling period. (Maunder Minimum and Dalton Minimum)
We appear to be entering a quiet period of the sun. That means a weaker solar wind so that more cosmic rays reach earth. Cosmic rays nucleate clouds. That means more clouds to cool the earth.
Other possible influences on climate include deviation of ocean currents, eg. Pacific Decadal Oscillation, which may be associated with more clouds, the wobbling (precession) of the earth’s axis and/or orbital eccentricity.
In Conclusion: CO2 is not the cause of recent warming. None of the scary predicted consequences have materialized, and judging from history, are not likely to occur. The climate is a very complex, poorly understood chaotic system. Increased CO2 has been a boon to crops, forests and ocean plankton, and reducing CO2 would be harmful to plant life.
It is probably not possible to do anything about the current warming trend.
Want to know more about this and other Modern Myths including climate change, evolution, origin of life, Big Bang cosmology or quantum physics? See related posts on this website or buy the book Perverted Truth Exposed: How Progressive Philosophy Has Corrupted Science in print or as e-book/Kindle on line at WND Superstore (the publisher) or at Amazon, Books-a-Million or Barnes & Noble .