In the latest research, the Oxford scientists studied fossil wood deposits and identified a signal that they say indicates an unusual level of light carbon in the Earth's atmosphere .
(the Oxford scientists; studied; fossil wood deposits; L:In the latest research) (the Oxford scientists; identified; a signal that they say indicates an unusual level of light carbon in the Earth's atmosphere; L:In the latest research) (they; say; indicates an unusual level of light carbon in the Earth's atmosphere)
the Oxford scientists the Oxford scientists they
studied identified say
fossil wood deposits L:In the latest research
a signal that they say indicates an unusual level of light carbon in the Earth's atmosphere L:In the latest research
indicates an unusual level of light carbon in the Earth's atmosphere