We talk to the nutritional scientist about how healthy it is to avoid eating meat, and what alternatives can be recommended.
Arctic scientist Julienne Stroeve has seen the effects of greenhouse gases first hand. She has some long-term ideas on how to reduce them as well as some very simple short-term ones.
There's no doubt how much money there is in football, but what about the financial and environmental cost of feeding a squad of players over a whole season? And is the current way of doing things the most effective?
Germans cook plenty of vegetables and say they care about animal welfare — but they aren't ready to give up their beloved sausages.
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