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People wearing face masks to curb the spread of COVID-19 walk in downtown Lisbon

A COVID variant of concern or just another ‘scare-iant?’

COVID-19

There have been hundreds and thousands variants of COVID-19. Emma Hodcroft, an epidemiologist at the University of Bern in Switzerland, explained to The World’s host Carol Hills when a variant actually becomes a variant of concern.

Global leaders cannot treat COVID-19 vaccines as ‘apartheid,’ says former Liberian president

COVID-19
A rapid diagnostic test for malaria.

With quick and easy malaria tests, some unexpected drawbacks

Health
Depression

The whole world is getting more depressed

Lifestyle
A syringe.

Mining nature for the next groundbreaking antibiotic

Health
Three-month-old Jesus, photographed on Oct. 5 in Guarenas, Venezuela, was born with microcephaly

Zika’s million-dollar question: Where are the birth defects?

Health

These three graphics offer a glimpse at why researchers are so confounded by Zika’s uneven impact across the Americas.

Muonio Town Center

Here’s where to find some of the cleanest air in the world

Environment

Want to visit a place with clean air? Really clean air? Maybe the cleanest of any urban area in the world? We check out a place north of the Arctic Circle that gets an A+ in the newly updated WHO Global Urban Ambient Pollution Database.

News of the spread of the ebola virus has residents of Guinea's capital Conakry on edge.

Why the World Health Organization is taking the ebola outbreak in Guinea ‘very seriously’

Health & Medicine

Ebola is one of the deadliest viruses on the planet and the outbreak that’s unfolding now in the west African nation of Guinea has spilled over into neighboring Liberia. Tarik Jasarevic, a spokesman for the UN’s World Health Organization, says international resources are being deployed to battle the crisis.Ebola is one of the deadliest viruses on the planet and the outbreak that’s unfolding now in the west African nation of Guinea has spilled over into neighboring Liberia. Tarik Jasarevic, a spokesman for the UN’s World Health Organization, says international resources are being deployed to battle the crisis.

A road trip to end typos

Business, Economics and Jobs

Two grammar buffs set off on a cross-country journey to correct typos. Not everyone was pleased.