I think there are several, but become more and more prevalent are greed and tribalism

Well, not sure about 'all' of them: But I think the egocentrity of religion is a major issue.

Failure to communicate

Honestly the root of all conflict stems from culture and scarcity of resources.

Religion.

Active ignorance masked at morality wrapped in selfishness...

Evolutionary mismatch.

[en.wikipedia.org]

Think the root of all the problems in the world would be the the thought of there being a root. I shall explain. Now talking of problems I assume it means problems created by humans, not problems like earthquakes, gamma rays, black holes, that are caused by natural phenomena and there roots are basically the laws of nature or physics, with the constants. Root is basically essentialism, or reductionism, one hand that there has to be a central cause or root, an essence that causes the problems. Christian religion the root would be sin, so you need a sacrifice to clean the sin, that is the eschatology and cristology, and all the religious coming to your door and spreading the good news, other religions and even philosophies have their own narratives as to roots. In Buddhism the root is desire or rather the grasping or aversion of desire, that leads to karma and this leads to suffering and reincarnation. Political philosophies also try to narrate that humans problems require political solutions, so we got the neoliberals or libertarians that the problem is a big state (forget that most of the history of humanity there were no states therefore no progress) and you need small states, lower taxes and let big corporations take care of everything, the communists is that capital is the problem, or big corporations, again the solution is political, close all big corporations and make the state in charge of everything. The problem with trying to find a root it leads to essentialism, that all objects have an essence so it difficult to leave room for a dynamic, progressive worldview, and the other is reductionism, reducing all problems to one root, so it all requires one solution, which has lead to dangerous religions and political philosophies. I prefer that rather than simple cause and effect, roots, essence, reduction to one factor, explain the world through interdependence, dynamics, complexity, emergence.

Money? ie: the Tories and the Republicans

Humans

I think all problems may stem from selfishness. We are all selfish by nature in that we need food and water and shelter. But we are also selfish by nature that we want companionship and recognition. None of these are bad by itself but can be destructive when extrapolated out. Acknowledging this fact can help us try to think of what our individual selfish actions may be doing to affect those immediately around us or to the world at large. Interesting question.

Over population. The answer...The emancipation of women. Take them off the cycle of breeding, Educate and empower them to empower themselves and us. I could go on but it's 6.42 am and I need some sleep before a big day.And get a photo up of me so I can go up a level. Hope you enjoy your day

Lack of critical thinking. Bad science, bad business, bad relationships don't last in the face of critical thinking.....or have a much smaller chance of damaging you, your finances, the ecology.....

Greed!
If there were only 2 men left on the planet, they would still fight over what the other one has! Maybe it's nature's way of controlling the population, although I doubt it could have predicted how fast we would develope ways of destroying ourselves!

Hello, death can be the root of all problems. Imagine if no one has to die. Nothing to kill or die for (John Lennon).

Ignorance - it breeds selfishness, arrogance, and all other ills. In my humble opinion, of course.

A very intersting question. In my observation, death can be the root of all problems. Just imagine if no one has to die. I love John Lennon (he's not the only one).

I don't know but I do beleive that the future of humanity is very bright, the population will not exceed 11 billion according to most qualified thinkers on the subject, which means we will never run out of either space or resources. We will continue to marry our techologies to nature (the solar panel is a current, though prototypical example). The poet Kalil Gibran said 'Would that I could gather up your houses into my hand and scatter them like seeds throughout the fields and forests'. With the development of green technologies this will happen and our future descendants will live in an environment that grows ever closer to utopia. In medieval times people thought that religion, or 'God' was at the centre of their lives and the root of all meaning, in the future I think people will look at our attitudes to work and consumption in the same way - as outdated and unenlightened. People's lives will become easier.

Religions (plural).

Quite obviously the root of all evil is square. Quick, the square root of 37? Evil, that.

Life

A tie between superstition and a lack of basic education.

Schools not being secular of course! Sad thing is it would take 25yrs or so before those kids were policy makers....

Inequality.

Be it income, race, religion, colour, creed... If we were all to be equal, a lot of the world's problems would fade away.

I can be wrong, but I believe that ignorance is the main troublemaker. At least in my country.