As
@Carole said, everyone has their own crusades. As far as I am concerned palm oil, cotton and soya are environmental disasters that have to be addressed.
Palm oil. Much of the world's supply comes from Indonesia, Large areas of native forest are cleared every year resulting in the deaths of up to 1000 orangutans a year, pushing the Sumatran tiger to the edge of extinction, and killing numerous other native species. Even local villages are being bulldozed to make way for plantations. Only 35 percent of the members of the Roundtable on Sustainable Palm Oil are actually certified as sustainable growers, the rest merely pay to be members without any guarantee of them following RSPO guidelines.
Cotton. Uses large quantities of water in its production, and needs the use of high levels of pesticides. In Uzbekistan & Tajikistan so much water has been drawn from rivers for cotton production that the Aral Sea into which they fed has all but dried out. This was one of the largest areas of inland water hosting many unique species, now most of its wildlife has been wiped out by cotton production. What is left is a desert from which around 43 million tons of pesticide laden dust are blown across the surrounding land. Cancer cases, particularly of the throat, have rocketed. In a Brazilian cotton growing area water is contaminated with around 19 pesticides. Organic cotton, if genuinely organic, is better but the need for unsustainable amounts of water is still a problem.
Soya. Much is grown in South America. In Argentina large areas of native forest are being cleared for soya production. The same goes for Brazil where illegal logging is eating into the rain forest at a horrendous rate and similar environmental damage is occurring in other soya production areas. Habitats are being destroyed and native animals are being killed. An article in the New Scientist reported recently that the inhabitants of two small native villages in Brazil had been massacred by illegal loggers clearing land for soya production. The new president of Brazil has said that he will remove the restrictions on logging to increase soya production.