Reusable containers may have to be reused many times to offset their negative environmental impacts - improving recycling infrastructure could be the answer.

Biogas is often overlooked as a source of renewable energy, but it could be a solution to dealing with the 9.5 million tonnes of food waste created by the UK every year.

Food waste is responsible for 3 billion tonnes of carbon dioxide emissions.

Scientists are looking for safe new ways to prevent ice from damaging food in frozen storage, which costs consumers billions of dollars a year in wasted food.

Converting food waste to animal feed – or reducing it altogether by supermarkets working with farmers – could save millions of tonnes of food from being discarded. It could also help raise animal welfare standards.

The cost of food that gets trashed anywhere between the farm and your plate is hundreds of billions of dollars a year in just the US. But a lot can be salvaged as ingredients for other food products.

With the goal of reducing food waste, a student-developed device predicts when an avocado will be ripe

Turning food scraps and yard trimmings into compost improves soil, making it easier for people to grow their own food. City composting programs spread those benefits more widely.

Lockdown has exposed real problems with the circular economy which urgently need to be addressed.