Researchers from the Stellenbosch University, South Africa, tried to map the invasion history of the Indian bullfrog (Hoplobatrachus tigerinus) from the early 2000s, which was when it was first reported in the islands.
A unique material, chromium antimonide (CrSb), defies conventional rules by conducting electricity like two different materials in one, dominated by electrons in one direction and holes in another, a phenomenon called DDCP.