Compost

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Will we eventually have to send our trash into space if we run out of room on Earth? Aiden, age 13, Maryland Heights, Mo. Our planet holds a lot of trash. Since the Industrial Revolution, we humans have produced 30 trillion tons of stuff – from skyscrapers and bridges to clothes and plastic bags. Much of it is still with us in the form of waste. Globally, people add 350 million tons to this total every day. What’s worse, much of the world’s garbage is mismanaged – dumped on land, in waterways and in open dumps in cities and towns. This exposes people to serious health risks. It harms plants and soil, and a lot of waste finds its way into the oceans. Thinking about what a mess we’re making can be pretty ove...