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Regular coffee drinkers can sniff out even tiny amounts of coffee and are faster at recognising the aroma, compared to non-coffee drinkers, new research has found.

Known for their ability to remove methane from the environment and convert it into a usable fuel, methanotrophic bacteria have long fascinated researchers. But how, exactly, these bacteria naturally perform such a complex reaction has been a mystery. 

Researchers at York University’s Faculty of Health say those who have a history of an eating disorder, obsessive-compulsive traits, dieting, poor body image, and a drive for thinness are more likely to develop a pathological obsession with healthy eating or consuming only healthy food, known as orthorexia nervosa (ON).

Underwater vehicles, diving robots, and detectors require their own energy supply to operate for long periods independent of ships.

Stable ecosystems occasionally experience events that cause widespread death — for example, bacteria in the human gut may be wiped out by antibiotics, or ocean life may be depleted by overfishing.