The fast-growing, homely plant, Trema micrantha blume, is native to the Americas, where it is widespread and often considered a weed.

But Moura Neto recently discovered its fruits and flowers contain one of the active ingredients in marijuana: cannabidiol, o…

Rio de Janeiro (AFP) In a laboratory tucked away on a sprawling university campus in Rio de Janeiro, Brazilian molecular biologist Rodrigo Moura Neto is running tests on a seemingly ordinary plant wi…