After years of trying to understand the minds of people who hurt others, I have recently turned my attention as a criminal psychologist from violent crimes to the less well-known world of green crime.

While researching for my new book, Green Crime: Inside the Minds of the People Destroying the Planet and How to Stop Them, I wanted to understand those who pose a threat to us on a much larger scale, at times even an existential level. Why do people choose to destroy the Earth and what can we do to stop them?

When I tell people that I am interested in environmental crimes, they often query two things. First, some ask whether I’m talking about environmental activists. No, people who take to the streets to raise awareness for the planet, even those who commit crimes like vandalising a building, are committing crimes for the environment, not against it. It is a problem that so many people think of the protesters who want to protect the planet before they think of those destroying it.

Second, people often conflate environmental crime and environmental harm. In other contexts, we understand that not all harms are crimes. For example, we know the difference between an aggressive argument and murder. Both are harmful, but only one is a crime. The same goes for environmental issues. There are many things that a company or person can legally do that are harmful to the Earth but are not crimes. Often it is only the most serious forms of environmental harm that are criminalised.

An environmental crime is when someone breaks a law related to destroying or contaminating our........

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