Penn State researchers used neutron radiography to reveal the first new information on a patch that may have come from Amelia Earhart's plane in 30 years. Now, they are using the same techniques to investigate microplastics.
EXCLUSIVE: Scientific analysis revealed the code D24 , XRO and either 335 or 385 etched on an aluminium panel which washed up on an island in the Pacific close to where Earhart s plane vanished.