The World Health Organization is leading an uphill battle involving multiple pandemic fronts on several continents. This is a symptom of a much larger issue - the negative impact of human activity on the natural ecosystem of planet earth.
We are just beginning to grasp how serious this problem is and develop solutions. Thus, the biggest problem facing the world is we, ourselves.
Report Kenneth's answer
We need more sustainable solutions. We have been avoiding this key issue for such a long time and the way world is changing with situation like a pandemic or climate change, makes it essential for us to re-think, re-emerge and re-plan the way we have been thinking till now.
Report manali's answer
The mindset of humans the world harbors.
If all humans can systematically develop a positive mindset towards themselves and other humans, then I think the world will be a better place.
So we need to change our mindset to remove the obstacles blocking our success.
Invest in yourself and people.
Cyber criminality is just another aspect.