Declining fish stocks near the surface of the British Columbia coast have shown the scientific community an unexpected advantage: levels of mercury in seabirds located in the area have remained relatively stable for the past 50 years because they have had to feed in areas with more sulfate-reducing bacteria that could control mercury levels in organisms.
Unlike today, ancient Earth needed more heat because the Sun was 10 to 15 percent dimmer than what it's today. Researchers have refuted a long-held theory that the Earth, billions of years in the past, stayed warm with the help of methane.
When the sun was dimmer, the Earth did not freeze up, and scientists had earlier believed it was because of methane. Now, a new study shatters this long-held assumption.
Researchers didn't know it until now, but two miles under the sea lies a new sulfate-breathing species, revealing just how little we really know about the ocean, new research shows.