Coffee and plastic waste have been turned into an eco-friendly way of reducing carbon emissions ... Rising atmospheric CO₂ levels pose serious risks to both the environment and human health, say ...

Every year, we throw 300 million tons of plastic waste, which ends up in rivers and oceans, and then enters into our bodies.

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...