From the category “creative responses to environmental challenges“: Concrete Canvas Shelters. These are inflatable concrete buildings, hardened shelters that require only water and air for construction. According to the manufacturer, they can be constructed by 2 people without any training in under an hour and are ready to use in 24 hours, making them a viable alternative to conventional emergency shelters. Contrary to the conventional light tents that only last for a limited amount of time and which use massive amounts of plastic and other synthetic fibre, these concrete shelters can last for decades, provide reliable shelter from even the heaviest storms,…