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B117, the SARS CoV-2 variant that was first detected in the U.K., has been found to be 30%-80% more transmissible. Juan Gaertner/Science Photo Library via Getty Images

What you need to know about the new COVID-19 variants

A biologist who studies the evolution of diseases explains what's different about the two new virus strains that have been found recently, and what that means for vaccine effectiveness.
A woman reacts after receiving the vaccine outside the Ashton Gate stadium in Bristol, which has become a COVID-19 vaccination centre. EPA-EFE

COVID vaccine weekly: can the UK vaccinate 15 million people by mid-February?

In our first weekly update on COVID vaccines, we consider how roll-out plans are being tweaked and when it's likely we'll start to see vaccines having an impact.
U.S. President Donald Trump walks out after speaking in the Brady Briefing Room in the White House in November 2020, three weeks after he lost the election. (AP Photo/Susan Walsh)

A second impeachment is just the start of Trump’s legal woes

After Joe Biden assumes the presidency next week, Donald Trump may face criminal and civil charges at both the federal and state levels for actions before and during his tenure as president.
Trump yells while visiting a portion of the border wall in Alamo, Tex. on Jan. 12, 2021. (AP Photo/Alex Brandon)

Trump impeached a second time – but Trumpism will live on

Donald Trump has become the first U.S. president to be impeached twice. But the ignorance and lawlessness of Trumpism will have a dangerous afterlife even after Trump has left Washington.
A pro-democracy activist in Hong Kong holds a photo of Zhang Zhan, a citizen journalist sentenced to four years in China for her reporting on the Wuhan COVID outbreak. Miguel Candela/EPA

How China is controlling the COVID origins narrative — silencing critics and locking up dissenters

The stakes are high for China as WHO teams arrive to investigate the origins of the coronavirus. Beijing has presented a success story to the world — and will not accept any criticism.

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Investigations with academics