What Does a Sustainable Diet Look Like?

It can be hard to know exactly what a sustainable diet looks like. For instance, a study from the University of Oxford, published in Climatic Change, found that the vegan diet produces the least greenhouse gas emissions. Comparisons were made between meat-eaters, fish-eaters, vegetarians, and vegans. In this way, a plant-based diet would be considered…View Post

The Flexitarian Diet: Potentially Sustainable But Morally Questionable

A flexitarian is someone who has a primarily vegetarian diet, but who occasionally eats fish and meat. Not all flexitarians are alike. As the name suggests, it is a flexible diet. While one person may only meat at the weekends or one day a week, someone else may reserve meat for dinner only, and another…View Post

Colonising Mars: A Colossal Feat of Human Ingenuity

Colonising Mars is no easy task. Elon Musk, the founder of SpaceX, has estimated that the current cost of sending someone to Mars is “around $10bn per person”. And there are all sorts of other logistical hurdles involved. But, if we want to expand into the Solar System, we’ll need to find out how to…View Post

The Potential of Space Technologies to Enable a Sustainable Future

When we think about the value of the space travel industry, we have to think beyond space missions. One of the most important and burgeoning activities of the space travel industry – that is often underappreciated – is the development of green technologies that could revolutionise many industries on Earth, including energy, food, and materials. When…View Post

Designing Green Cities of the Future

We may all conjure up different images when we try to think what cities in the future will look like, say 20, 50, or 100 years from now. For the optimistically minded, these cities may be idyllic, clean, hi-tech, and utopian, while for the more pessimistic among us, such cities may look bleak, barren, in…View Post