01/02/2022

Human gut bacteria have sex to share vitamin B12

Your gut bacteria need vitamin B12 just as much as you do. Though DNA is usually passed from parent to child, new research shows gut bacteria transfer genes through "sex" in order to take their vitamins.

US to reimpose limits on power plants' mercury emissions

The US government announced Monday it wants to revive a regulation limiting air emissions of mercury and other toxic substances from fossil fuel-fired power plants that had been undermined by the previous administration.

WHO warns of COVID medical waste threat

The World Health Organization warned Tuesday that the vast amount of waste produced in tackling the COVID-19 pandemic posed a threat to human and environmental health.

770-km US megaflash sets new lightning record

A single flash of lightning in the United States nearly two years ago cut across the sky for nearly 770 kilometres, setting a new world record, the United Nations said Tuesday.

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