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Science + Tech – Articles, Analysis, Opinion

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Air pollution exposure during mid to early life may be more important to developing Alzheimer’s disease than doctors realized. Cecilie Arcurs via Getty Images

Air pollution may contribute to Alzheimer’s and dementia risk – here’s what we’re learning from brain scans

The tiny air pollutants known as PM2.5, emitted by vehicles, factories and power plants, aren’t just a hazard for lungs. A study finds more brain shrinkage in older women exposed to pollution.
The 2020 winter solstice night will be accompanied by another cosmic event known as ‘the great conjunction,’ when Saturn and Jupiter will appear right next to each other. Andrew Doughty/EyeEm via Getty Images and Jeff Dai/Stocktrek via Getty Images

What you need to know about this year’s winter solstice and the great conjunction

The 2020 winter solstice is also when Saturn and Jupiter appear closest to each other for 60 years, Here’s what you need to know about both the events.
The number one scientific breakthrough for 2020: multiple vaccines to prevent COVID-19. Philippe Raimbault/Photodisc via Getty Images

The top scientific breakthrough for 2020 was understanding SARS-CoV-2 and how it causes COVID-19 – and then developing multiple vaccines

The development of multiple vaccines against the virus that causes COVID-19 has been hailed as the breakthrough of 2020. But there were many more supporting discoveries that made this possible.
Behind the scenes, natural history museums store biological samples from the field. Ryan Stephens

Museum specimens could help fight the next pandemic – why preserving collections is crucial to future scientific discoveries

Specimen preservation means researchers don’t need to reinvent the wheel each time they ask a new question, making it critical for the advancement of science. But many specimens are discarded or lost.
W.E.B. Du Bois in his office at The Crisis in New York City, 1925. W. E. B. Du Bois Papers (MS 312). Special Collections and University Archives, University of Massachusetts Amherst Libraries

W.E.B. Du Bois embraced science to fight racism as editor of NAACP’s magazine The Crisis

As editor of the magazine for 24 years, Du Bois featured articles about biology, evolution, archaeology in Africa and more to refute the rampant scientific racism of the early 20th century.