Take some valium
A conspiracy by communists? The ones that live under your bed? What do *you* know about communists?
There are two types of communists -
1) the ones that believe that the whole world should live in a kibbutz, money should be abolished, private property should be abolished, everyone must work as much as he can and in return get as much as he wants (which is impossible).
This type consists of octagenarians with alzheimer's and the students of the University College of London. The former's ranks are constantly diminished by natural attrition, the latter's - by facing reality when they graduate.
2) the ones that see the "working masses" as a ladder for their own political careers where they can promise the moneys someone else makes to those who don't want to work and so get their votes.
These "communists" are not really communists but can be known as labourists, socialists, unionists and many other -ists, depending on what is the most convenient or available -ism of the day. Our previous Government was made up of such -ists for 100%, for example.
There are also ones that are overly excited about any single cause which they see, through lack of experience/knowledge/mental capacity as the only source of all evil in the world. This type is not strictly limited to communism because equally the same type of individuals can be hang up about - jews, foreigners, abortions, feminism, the Bible, the Koran, Christ, Antichrist, Lenin, Stalin, Hitler, sex, evolution, global warming, global cooling, whatever.
Now, which part of any of the above can conspire to say that there is no global warming?
Clearly, the type 1 is incapable of any conspiracy a) because some of them are too old, b) the others are too idealistic to act on anything, c) none of them has any power to influence the society.
Type 2 cannot conspire as such a conspiracy requires an agreement to act towards one goal regardless of short term gains or losses. As they type 2 are 100% pure egotists any conspiracy with their participation will be extremely short-lived and ineffectual.
Type 3 don't have enough free will to conspire as they are the led masses, who will switch their alliance to anyone who frightens them the most at any particular day of the week.
So, no conspiracy. However, as the type 2's were recently in power throughout the world, more or less, and this type strives on handing out other people's money to buy the votes of anyone who they think is currently for sale, it follows naturally that the governments were throwing cash at the fad of the day, which just happened to be the environment and carbon footprints.
The only problem is - the money's run out and the child asked about the emperor's new clothes.
The warming is probably happening and it's probably anthropomorphic but the Greenpeace and Friends of the Earth are as far away from being the remedies for that as shamanism is the remedy for appendicitis.