Can old clothes really be recycled into new textiles? Yes, and it’s finally starting to happen for real. For decades textile recycling mostly meant shredding old clothes into insulation or industrial rags. Actually turning a worn-out cotton shirt back into new cotton fabric, which is called fibre-to-fibre recycling, was technically possible but nobody could make... Read More

Is solar power now the cheapest source of energy? In most of the world, yes it is. The International Energy Agency confirmed in their 2024 World Energy Outlook that solar PV is now the cheapest source of new electricity generation in most markets. Not projected to be in a decade. Right now, today. The numbers... Read More

What is a sand battery and how does it work? A sand battery is about as low-tech as energy storage gets and I mean that as a compliment. You take a big insulated container, fill it with sand, and heat the sand to around 500-600°C using excess electricity from wind or solar. When you need... Read More