It seems that there are two basic types of aircons on the market today – ugly and hideous. Aside from that – all of them play real havoc with your electric bill and negatively impact the environment. This impressive concept from designer Rami Santala is envisioned to address both problems. Visually stunning piece, called Foliage, is small enough to fit on a windowsill and smart enough to detect sunlight and use it to power the device. Inspired by houseplants, Foliage transforms the shape of its ‘leaves’ to harvest more light. Another reason why this idea makes perfect sense is that we mostly need air-conditioning during the summer, when the sunlight is abundant. So, there you have it – the air that is clean and cool in all senses of the word.