Governments at COP24 should focus on building a global electricity grid – Prof. Damien Ernst

Image credit - Kenueone, licensed under CC0 1.0

Governments at the COP24 climate change conference in Katowice, Poland, which ends on 14 December, should tackle fossil-fuel reliance by building a global energy grid that connects renewable energy from all around the world – and the best place to start is with a giant wind farm in Greenland, says Professor Damien Ernst, an energy scientist from … Read more

Can we produce enough green hydrogen to save the world?

Image credit - Siemens

by Jonathan O’Callaghan Around a fifth of all greenhouse gas emissions are produced by industries such as steel and cement so if we’re going to work towards an emission-free society then this is a good place to start. And one promising technology may have a key role to play. ‘Hydrogen and fuels derived (from it) … Read more

Seaweed coffee cups could help ditch single-use plastics

Image credit - Skipping Rocks Lab

A significant amount of the single-use plastics that we use ends up in our oceans. As people increasingly ditch these plastics, seaweed — also known as macroalgae — and microalgae could be the solutions to the world’s plastic food packaging problem. These are being used to develop everyday items, from edible water bottles to coffee cups to … Read more

Offshore wind farms to test business in deep water

Advocates of floating offshore wind platforms say they are cheaper to run and install, less disruptive to sea life, and have greater output than near-shore alternatives.

As wind turbines become increasingly familiar sights along shorelines, developers of offshore floating platforms, which harness the powerful winds further out to sea, are seeking to establish their technologies as a major viable source of clean energy. Bottom-fixed offshore wind turbines – with foundations in the seabed – face depth constraints and can only be … Read more

Hydrogen use doesn’t emit carbon but its production often does. That could soon change

Trucks on Orkney carry hydrogen produced by wind- and tide-powered electrolysis in special lightweight high pressure cylinders, designed to adhere to the low weight limit of the island roads.

Hydrogen can be used to power cars, supply electricity and heat homes, all with zero carbon emissions. The snag is that the vast majority of hydrogen itself is derived from fossil fuels – a fact that scientists are now hoping to change. They plan to clean up production to kickstart a dedicated economy – something that … Read more

In a zero-waste society, people will need to share and repair

Recycling can be inefficient when parts such as dashboards from cars are too hard to dismantle, says Felipe Maya.

Businesses and consumers need to stop thinking of products as things to own and move towards a culture of sharing and repairing if we are to fulfil the ambition of creating a circular economy, according to Felipe Maya, project and innovation manager at sustainable engineering firm Exergy, headquartered in Coventry, UK. Maya and his colleagues … Read more