Matt Farncomb Posted over 2 years ago Hadyn Parry: Re-engineering mosquitos to fight disease So please let me know which continents on Earth "we shouldn't be in." Once you do, also add how you separate where we should be from where we shouldn't be. Would you say the Americas? Well we have been there for approximately 14,000 years... Australia? We've been there for 50,000 years. It's true, we do greatly effect the Eco systems of where we migrate to but I still find it impossible to sympathise with any sort of culling method. The best and most humane way to control population growth is through providing more birth control and education to developing countries.