Helix is a nine-speed conveyance with a handmade titanium frame and patent pending side-by-side folding that puts the wheels beside the frame and between the cranks. Once folded, it can be rolled on its own wheels and has an integrated stand for when the rider has stopped.
Helix Folding Bike add that their 21lb bicycle employs a patent pending spring loaded locking mechanisms that pass through the fork and steerer tubes to create a safer lock.
The company says its goal is to make the best folding bikes on the planet and that Helix is coming to Kickstarter in early March 2015.
Silk and cellulose membrane filters PFAS from water
I am sceptical about the claim (no citation given) that the material can extract ´orders of magnitude´ more than activated carbon. Orders (plural)...