Scientists may have just invented an amazing new way to clean up oil spills by mimicking the ingenious physics of cactus needles.
Cactus needles are not just for warding off animals trying get a taste of the plant's moist flesh. They also use a trick from physics to help them draw water from the air to keep the plant hydrated in its harsh desert environment.
Cactus needles are shaped like cones with — as many unfortunate victims have found — a sharp tip facing outward. The spines widen as they get closer to the body of the plant.
http://www.businessinsider.com/cactus-needles-clean-up-oil-spills-2013-8
Cactus needles are not just for warding off animals trying get a taste of the plant's moist flesh. They also use a trick from physics to help them draw water from the air to keep the plant hydrated in its harsh desert environment.
Cactus needles are shaped like cones with — as many unfortunate victims have found — a sharp tip facing outward. The spines widen as they get closer to the body of the plant.
http://www.businessinsider.com/cactus-needles-clean-up-oil-spills-2013-8