This wacky bike helmet that inflates on impact is just one of the cool concept bike helmets that could change the future of biking.
We also have gorgeous container gardens made from trash, crazy 'while biking' stories, the scary truth about the chemicals in sunscreen, tips on picking the best bike for you, and more in the Week in Pictures -- our roundup of the best images on TreeHugger this week.
The Future of Crown Protection
The market's current bike helmets are technologically advanced when it comes to safety -- but that doesn't mean they couldn't be improved upon.
From inflatable collars to flat-folding helmets, to helmets made of potted plants and those offering alternative energy, to stylish head protectors and Bluetooth-enabled coverings, see what the future of bike helmets could hold.