Keep some things to yourself and don't promote havoc by hurting people you love.
In north-east Nigeria, a region where Boko Haram militants have wreaked havoc, poverty and lack of job opportunities are often cited as contributing to young people's susceptibility to extremism.
Apparently, they are designed to keep the noise in the user's apartment to the level of an air conditioning unit, while wreaking havoc upstairs.
Areeba Hamid, an air pollution campaigner with environmental group Greenpeace, said: "Toxic air causes havoc to people's health wherever in the world they live.
Poor emotional intelligence can wreak havoc in multiple areas of a person's life.
Here, the skincare pros reveal how your phone, office air con and where you sit in the room could be wreaking havoc with your skin.
This can wreak havoc on your circadian rhythms, resulting in sleep deprivation, daytime sleepiness and fatigue.
Letting things slide inevitably gives them more power to wreak havoc on our lives as they insist more and more aggressively to be dealt with.
Warning: Looking at your smartphone while lying in bed at night could wreak havoc on your vision.
Unexpected job loss can wreak havoc on your finances (and it's one of the reasons to have emergency savings to fall back on), and then there's the need to find a new job, which is stressful and might even involve potential employers checking your credit.
"Urban air pollution continues to rise at an alarming rate, wreaking havoc on human health," Maria Neira, the head of WHO's department of public health and environment, said in a statement.
Stress and anxiety wreak havoc with our immune system, leaving us susceptible to all kinds of nasties—particularly during the winter.
Make sure it does not wreak havoc on your life, because it will affect your job performance.
He then discusses where it all comes from - nurture rather than nature, for narcissist parents can wreak havoc on future generations.
Like Tuck, heroine Liliane's parents divorced when she was young, wreaking personal havoc that mirrored the tragedies unfolding in Europe at the same time.
Keep some things to yourself and don't promote havoc by hurting people you love.
However perfect a tourist destination might seem, it will always have its glaring faults - in London the attractions are too spread out, in Venice the streets can be too narrow and in Rome the cobbles play havoc on the ankles.
That year it wreaked weather-related havoc across the globe, from mudslides in California to fires in Australia.
The P2P sector is a tiddler compared to the overall financial world (or the pile of mortgage derivatives which sowed havoc in 2008).
But one university psychologist has warned this is wreaking havoc with our self-image and undermining our sense of self-worth.
