Time to Choose

I'm not sure Mr Powell even WATCHED the film, but no matter. The so- called "review" he gave was ignorant. The reasons why films like TTC and DiCaprio's "Before the Flood" are so important is that the general public does not know how to cut through the distracting noise which Mr Powell's review so exemplifies, and does not care to understand the simple science which makes climate disruption due to human emissions of greenhouse gases a logical necessity.

The claim that this is a "leftist idea" is ridiculous, since the inevitability of climate disruption due to fossil fuel emissions was nailed down at the end of the 19th century, and details worked out by 1938 by Guy Stewart Callendar, with proof.

The argument is easy: (1) Energy is always conserved. (First law of thermodynamics.) (2) Earth receives energy from Sun at high frequencies and radiates it out as heat, keeping energy on Earth in balance. (Black body radiation.) (3) Carbon dioxide has a big an powerful absorption line at the peak of the Earth's heat emissions. Carbon dioxide is a well-mixed trace gas. Effects of such gases do not depend upon their being dominant. Nitrogen, for example, has no such effect, and it's more than 70% of atmosphere. Consequently, carbon dioxide retains some of the energy which would otherwise be emitted in the process described in "(2)". The more carbon dioxide, the greater this effect. (4) The retention heats the atmosphere, and, transitively, the oceans, which, at the higher temperature restores black body balance needed for the equilibrium of "(1)" and "(2)". (5) Human emissions of carbon dioxide are many many times greater than ANY natural source. (6) Effects of variations in Sun, volcanoes, magnetic fields, and the rest are inconsequential and uncorrelated with long run temperatures. (7) Physical calculations and evidence from deep Earth history substantiate the effect.

Finally we KNOW this works the way it does because we rely upon the effect to ENGINEER things, and we do that successfully. For example, if this were not correct, then we could not build semiconductors which operate the circuits in computers, cell phones, and other devices successfully. Moreover, if this were not correct, we could not keep spacecraft in the proper range of temperatures for them to work. So it's not just speculation. We know it works. It has to. And it has zero, zilch, nil to do with politics.

This is one of the best well balanced and educational documentaries about global warming I have seen to date.

This documentary warns (in understandable words) about the disastrous dangers that global warming causes to the human existence on this planet. BUT, it also offers lots of positive possibilities of how to combat and revert global warming right NOW.

Highly recommended watch for anyone wanting to understand all the broader implications of global warming and how to make a POSITIVE CHANGE.

Time to choose - between two sides of the same coin. One industry we all know is harming the planet, and another that had done a good job with marketing spin.

This is a false choice. Both are terrible. We have other options. Where's the conversation about degrowth?

Watch 'what/why in the world are they spraying?' instead. the fact is that prominent figures in science such as david keith of harvard university have already admitted to being able to 'geoengineer' the weather. what that means is using sprayed particulates of things such as aluminium, barium, lithium, and many other dangerous free-form oxide metals. This information is outlined in USAF training manuals as well as the above mentioned documentary. the fact is that global warming, climate change, or by any other name is now and most likely has always been the agenda to control the weather known as 'chemtrails' to some and weather modification to the rest because that is what it really is.

More leftist drivel.... Take out your Brain - Wash it - reinsert into Cranium. Oscar Isaac did a fine job narrating the film, but it is completely one sided - it does not present evidence (or lack thereof) that in fact - the climate always changes, has always changed, and will continue to do so... last time the Earth spontaneously warmed up from the last Ice Age, I'm pretty sure the Industrial Evolution had not yet occurred, and predated Humans' ability to potentially affect the environment. Suspect Al Gore helped fund this Movie. Would like to have seen an evenly balanced presentation of the facts - to include a discussion of scientifically proved phenomena that affects global climate change over many millenniums to include cyclical variations in Earth's axial tilt, orbital eccentricity, Precession of solstices and equinoxes, and External/Celestial forces.