India, April 20 -- Summer is here, and it's showing no mercy. You wake up at 6:00 AM thanks to harsh sunlight, and by noon, your room feels like a trapped glass box. Not ideal. Running the AC all day is not the answer either. It adds to your bills, and let's be honest, it is not great for the planet. Small changes at home can actually make a difference. Blackout curtains are one of those fixes. Over the decade when I was designing homes, I realised these are not just underused, but most people in India are unsure of how to use them properly. People relate to blackout curtains as a tool used to block light. But what one does not realise is that they help reduce heat transfer through windows and also mute sound by a few decibels, making the...