Researchers in the US have developed bio-based air filters that they claim can capture toxic chemicals that current filters can’t.

Hospitals generate huge amounts of rubbish. According to the World Health Organization , high-income countries produce up to 0.5 kg of hazardous waste per hospital bed per day.

Industrial food treatment processes need to tackle bacteria that can spoil food . These microorganisms, although non-pathogenic, can make food products unpalatable and affect how long they can be stored for.

Food borne botulism is a rare, but potentially fatal disease. According to the World Health Organisation the toxins that cause the illness are some of the most lethal substances known.