Plastic water bottles come with a higher price tag than most people realize, taking up to 1,000 years to decompose in a landfill. The fact that at least half of all water bottles are used only once makes the waste that much more egregious. Icelandic product designer Ari Jónsson decided he needed to take action by fashioning a biodegradable water bottle from algae. By Lacy Cooke. Read more.