Earth was mostly devoid of oxygen for much of its 4.5 billion year lifetime. That is, until certain processes started to ...

That would have enabled more of this organic carbon—and carbonate accumulating in shallow water around Columbia—to be ...

Sleep breathing disorders (SBDs)—including obstructive sleep apnoea, central sleep apnoea and sleep-related hypoventilation syndromes—represent a major yet under-recognised contributor to global ...