The study, led by researchers at Texas A&M University and published in Nature, could explain why many mental health conditions occur together, according to a press release.

Roger Norton, a research professor at Texas A&M University, told Fox News Digital the spike is being driven by extreme weather in Brazil and Vietnam. Brazil's coffee crops suffered from a long drought last season, while Vietnam's were recently devastated by heavy rainfall. The price variations, Norton said, come down to supply and demand.

With help from Texas A&M University historical preservationists, experts have been working for 14 years to gather facts about the ship while preserving it carefully.